I don't think kincaid should "replace" dewey. dewey was a lot of people's favourite.so i think if he did replace dewey and became one of the main characters for future movies(if there will be more than 7)it might make a lot of people mad.
i think i would be the biggest art the clown or terrifier fan because i've seen all movies i loved them all although T2 would probably be the best in my opinion i saw T2 and 3 in theatres and was art for halloween for 3 years in a row