While Marvel Studios has been on a cinematic roll for the past few years (they can thank the big-screen ups and downs over the years. Like any other movie, this can sometimes be attributed to last minute changes made by producers.
Whether they're changing the story, reshooting scenes, or taking them out of the movie altogether, the people behind our favorite films make us wonder if the final products we got were made better or worse by the changes.
A great example of the former was getting Michael J. Fox to work around his Family Ties shooting schedule to film Back to the Future. While and will forever be associated with time-travelling "slacker" Marty.
For an example of the latter, look no further than last year's Justice League. While its reviews were better than those given to Batman v Superman and Suicide Squad, it's plain to see that, despite director Zack Snyder having Joss Whedon's reshoots made the film seem divided in of focus and a product of two different directors.
So, when hearing about changes being made to an Marvel film, we may not know whether to feel excited or nervous, but, once we see the film in theaters, at least we'll have something to praise or make fun of later.
To explore some of these instances, here are the 11 Last Minute Changes That Hurt Marvel Movies (And 9 That Saved Them).
Hurt: Wolverine's costume cut from The Wolverine
With every superhero comes an iconic look. For Wolverine, it's his blue-and-yellow outfit and pointed mask.
However, as comic books movies are known to do, Wolverine's appearance was altered in a major way in the X-Men film series.
While some fans noted actor Hugh Jackman's difference in height, it was the absence of Wolverine's costume that angered many.
Despite this, fans kept watching, hoping to one day catch a glimpse of the suit - and, if 2013's The Wolverine had gone as originally planned, they would have.
An alternate ending had Logan's partner Yukio give him the outfit as a present when they're on the plane together.
When asked about the outfit's exclusion from the series, Jackman told EW that despite discussions for its inclusion, "we just couldn't find a way to do it and be in keeping with the tone of the film(s)."
Saved: Removing Mary Jane from The Amazing Spider-Man 2
With three villains, a mystery centered around Peter's parents, a continuing relationship with Emma Stone's Gwen Stacy, and more focus on a future Sinister Six movie than the sequel itself, The Amazing Spider-Man 2 was a mess to sit through.
This is why it's good the producers showed at least a little restraint by cutting Mary Jane Watson's scenes from the film.
Played by Shailene Woodley, MJ was only going to be in a few scenes, which may have resulted in her appearance feeling either tacked on or lost in the film's chaotic structure.
Speaking to The Hollywood Reporter, director Marc Webb said he cut Woodley's part to help "streamline the story and focus on Peter and Gwen and their relationship."
A proposed appearance by MJ in a third movie was eventually cancelled (along with plans for an entire cinematic universe).
Hurt: Morbius cut from Blade
While the Blade trilogy already had several vampires, including Morbius, the Living Vampire, would have been a treat for fans.
In the comics, biochemist Michael Morbius undertook an experiment meant to cure his blood disorder. Instead, it transformed him into a vampire-like superhuman with a lust for blood.
On the Blade DVD commentary, writer David S. Goyer revealed the film originally ended with a shot of a mysterious figure on a nearby rooftop, which was meant to be Morbius.
The plan was for Morbius to be the second film's main villain, which could've proved very interesting when pitting him against vampire hunter Blade, another man fighting blood-sucking temptations.
Though he ultimately wasn't used (in the Blade films cinematic universe.
Hurt: Hawkeye not included in Winter Soldier
Long before Clint Barton was missed by fans in Avengers: Infinity War, he was missing in action due to a cut scene from 2014's Captain America: The Winter Soldier.
As revealed by directors Anthony and Joe Russo on an episode of Screen Rant Underground, when Captain America became a fugitive, Hawkeye was meant to be the one ordered to hunt him down in Washington, D.C.
Thankfully, even though he would've caught up to him, Barton wouldn't have betrayed his friend, as the Russos said he would've told Steve "to make it look real" by punching him, as they were being watched by S.H.I.E.L.D. Most likely, this would've resulted in Steve escaping.
Due to a reported scheduling conflict, however, actor Jeremy Renner was unable to shoot the scene.
Saved: Thanos' snap in Infinity War rather than Avengers 4
Adapting Thanos' arrival was never going to be easy, which is why it's good Marvel decided on breaking the story into two films.
In Infinity War, fans finally got to see actor Josh Brolin inhabit the role of the Mad Titan, collect all the Infinity Stones, and, worst of all, snap his fingers and end half of all life in the universe.
This not only broke the hearts of countless Marvel fans but also ended the movie on one of the greatest cliffhangers ever.
However, screenwriters Christopher Markus and Stephen McFeely told Avengers 4.
The snap was moved to Infinity War because the writers wanted the movies to feel like two different entities.
Hurt: Falcon and Iron Man kept apart in Infinity War
Throughout the MCU, Tony Stark has served as a mentor and father figure to Peter Parker. Because of this, it only made sense to have them team up in Infinity War.
While Tony tries to send him home, Peter hitches a ride on Ebony Maw's ship and tags along on Tony and Doctor Strange's trip to Titan.
However, an earlier draft of the film had Spider-Man's role swapped with Falcon's.
While this would've kept Peter out of some great scenes, having Falcon and Tony stuck on a ship together would've definitely made for some interesting conversation, especially considering their rivalry since Civil War.
"It's always great to have those guys in various situations, and there was a lot to do with them in both situations," Markus told Yahoo.
Perhaps this would've also saved us from that gut-wrenching goodbye scene.
Saved: Mark Ruffalo's casting as Hulk
Even though 2008's The Incredible Hulk is one of the MCU's lowest-rated films, many fans agree actor Edward Norton did a fine job as Bruce Banner.
However, his time as Marvel's not-so-jolly green giant was short-lived, as four years later, he was replaced by Mark Ruffalo in The Avengers, and Ruffalo has continued playing him ever since.
Norton's recasting has been attributed to a feud between him and Marvel over the Incredible Hulk movie script. Nevertheless, Ruffalo told EW that Norton "has bequeathed this part to me."
While fans may have been caught off guard by the casting (along with Norton himself, according to Deadline Hollywood), they are now clamoring for more as Ruffalo continues to please as the green Avenger.
Hurt: Age of Ultron not using Loki or Abomination
Before Infinity War, fans were getting their money's worth of comic book characters in 2015's Avengers: Age of Ultron.
Besides the Avengers gaining War Machine, Falcon, Scarlet Witch, Vision, and (temporarily) Quicksilver, there were also appearances by Ulysses Klaue, Baron Strucker, Heimdall, and Peggy Carter.
While this may already seem like more than enough characters, there were originally plans to include fan-favorite Loki and long-time-not-seen Abomination, both of whom could've proven more than just throw-away cameos.
For the former, actor Tim Roth told Crave Online that while his character was planned for the film, "it just kind of got swept under the carpet, I guess."
As for Loki, whose actor, Tom Hiddleston, actually shot scenes for the film, director Joss Whedon told MTV that the movie was already "so filled" with content.
Come on, Whedon. Can't fans indulge sometimes?
Saved: Ant-Man on Team Cap in Civil War
As Hank Pym told Scott Lang, "you never can trust a Stark." But, apparently, one can sometimes.
In 2016's Captain America Civil War, Steve Rogers recruits Ant-Man for a fight against Iron Man and his team of heroes.
While it was hilarious seeing Lang's reaction to meeting and fighting with Captain America, he was almost against him in a different version of the film.
Markus and McFeely (man, these guys sure like imagining different scenarios) told Cinema Blend that Ant-Man would be on Team Stark if Sony didn't give Marvel the rights to use Spider-Man.
According to the writers, Tony would visit Scott in San Francisco at one of Cassie's soccer games. However, they itted the scene wasn't very well done.
Good thing Sony pulled through, as Spider-Man turned out to be one of Civil War's highlights.
Hurt: Oscorp Tower left out of The Avengers
Many fans still consider actor Andrew Garfield to be the definitive Peter Parker and wish he could've been the one to make the leap into the MCU.
While this was certainly no easy task thanks to Sony and Marvel both having their own separate movie rights, the two universes almost met in a small way in one of the superhero world's biggest films.
Speaking to Latino Review, Amazing Spider-Man producers Avi Arad and Matt Tolmach said the Oscorp Tower almost appeared in the New York skyline in 2012's blockbuster The Avengers.
However, due to time issues, the building wasn't used.
"By the time the Oscorp building was fully designed, The Avengers' digital Manhattan was already basically rendered," the producers said.