Wow, a lot to digest. Hardly know where to start! I'm going to miss a question or two here, so my apologies if I miss yours.
I have some animated films and shows in the works. Some will be familiar, but others will be unlike what you saw ITTL. I specifically recall Oliver & Co. coming out of a 1980s Eisner "Gong Show" session, so that may be butterflied. Something with Dogs seems likely on one form or another.
While Tim Curry as Judge Doom sounds great, it does make me increasingly wonder how Christopher Llyod’s career is going. Losing both of his iconic roles in Back to the Future and now Who Framed Roger Rabbit is probably not good for his career.
No matter what Lloyd has a long and distinguished career as a character and voice actor much as Lithgow has ITTL. He was still a Klingon in
STIII, frex, and still in
Buckaroo Bonzai. We can say that he was in one of those forgotten films that Lloyd or Curry would have starred in. I'm trying to think of a great ATL vehicle to showcase his talents.
While we're at it, how's Charles Fleischer doing? I mean, doing the voice of Roger Rabbit is practically the only thing he's known for IOTL.
Long career as a voice actor in many animated productions.
Other things:
Muppetland was mentioned briefly in one post. Will be expanded upon fairly soon. We can certainly assume that Muppet Parades are a thing. I don't have the time to get into a lot of the details at the park.
Raimi is directing Batman as mentioned in the
Running Man post.
Spiderman in the 1990s would indeed require a new way of doing effects along with clever rethinking of camera angles and the like (think of how much
The Maxtrix accomplished just with new camera tricks). Having a guy swing in front of a back-projection won't cut it anymore.
More Muppet-based films and shows are certainly on the horizon. In fact, soon you'll be seeing The Muppets like you've never seen them before.