Joss Whedon's beloved television series, Rupert Giles.
The creator of the death of Buffy's mother, Joyce, and a wealth of other issues that felt relevant to teenagers and young people, Buffy never felt too heavy that it wasn't easily digestible or - in the streaming age - easily binge-watchable.
While there's likely going to be some disconnect between fans of the original series and the new generation, there are ways to connect the Buffy-verse and create some cohesion. Sarah Michelle Gellar has stated that she won't be in the Buffy reboot, but that doesn't mean other characters couldn't resurface. One that makes the most sense would be Rupert Giles, Buffy's loyal Watcher and father-figure, who could continue his Slayer's legacy, even though she is unlikely to appear.
Buffy The Vampire Slayer's Reboot Should Feature Giles
After Buffy the Vampire Slayer ended in 2003 after a seven-season run, the story of Buffy and her Scooby Gang respected member of the Watcher's Council and stood stalwart by his Slayer's side.
Willow performed a powerful spell during the series finale, "Chosen", to give Slayer powers to any existing Potential Slayer, so they could all the greater fight against evil together. By the finale, the Slayer would no longer be a mantle that one young woman - or even two - had to carry alone.
According to Owusu-Breen, the world seems "a lot scarier" twenty years after Buffy the Vampire Slayer fought her last battle on the small screen; perhaps that is even more reason to bring aboard a seasoned Watcher with strong, paternal tendencies to guide not only a new Slayer, but a generation of new young people who need to learn to navigate a very different world than the one he helped Buffy through years ago.