A few things:
1) Are we thinking we are getting a large set piece in the area where AoV has been the past few years? If so, which IP would benefit from having a large set piece there?
2) KKfOS is a movie I have never seen, however talk of foam and that short clip of the shadow puppets posted above would fit the sting alley area the best. Foam would be out of the way from the GP that doesn't want to take part in the foam and the shadow puppets on the brick work in that area would look just like the film.
3) They could do a really unique cast change if they didn't put a set piece near Mel's for KKfOS. A single parade float with the whole cast could leave Vine street and basically do the parade route backwards going in front of Transformers and down South Street to go backstage next to FF where it would turn around and wait for the next cast change. This would mean it never went through any other SZ and wouldn't cause much of a traffic jam if it happened once every 45 minutes or so.
4) While I think the Chucky fair idea is great, I hope they don't put up a bunch of carnival games for guests to play in the middle of the zone. Would kinda kill the mood for me as it would be more of a cash grab than a SZ in my eyes.
5) I can't see Universal ever doing Chucky's Insult Emporium again. While most people would love it, you would have those few people that would be up in arms if he talked about them. Clips from Hollywood show he was quite inappropriate. If guest complained about the voodoo show which got it shut down in like 2 days, I can't see Chucky making it past opening night. It just the PC world we live in now sadly.