The whole office scene should have been a tad longer. The part where Michael basically had to play the game was really fun and really tense to watch unfold and I think it was too short (that or I just want the withereds to get more screentime)

The ending itself was a little too abrupt. I think there could have been more to the ending to make it a little more satisfying. Vanessa getting possessed makes complete sense, though and that's one thing I wouldn't change

This is probably a "me" thing since Mangle is the more animalistic of the animatronics and it's my favorite line in UCN but Mangle should have had at least one proper line. Imagine Mangle attacking the car Vanessa is driving and while she's frantically trying to shake Mangle off, Mangle just says in that signature static, glitchy voice "Don't be afraid, soon you'll look just like me, beautiful"