There's been something I've thought about that really bother me actually and it's mostly to do with Bev. I disliked that they pretty much glazed over her backstory (and her success) and robbed her of a lot of the personality she had in the first film. I think Jessica Chastain did the best she could but it was sad that such a standout character in the first film was so underwritten here.
That being said, the more I think about the film's ending, the more I think it's a massive improvement over the book's. I did quite like how, in the book, IT's death results in the destruction of Derry since IT was Derry in effect but I always hated how the Losers forgot each other and how Bill essentially got away scot free with cheating on Audra. Like, I understand that it's a commentary on childhood friends growing apart and moving on but I thought the film handled it better in that just the house on Neibolt street collapsed instead.
I've also got mixed feelings on Stanley's letter in the end. I liked that he got a hero moment but it's unfortunate and quite wrong that it came at the expense of romanticising his suicide.
Ugh, I always feel like I'm talking **** about this film but I did really like it, I swear
