I agree about those IPs having started to become dated, I chose those themes a few years ago. However, I was trying to cover different theme park land "genres", the typical Sci-Fi, Wild West, Adventure, Fantasy etc.
Some of those IPs have died/aren't current anymore, but then look at Splash Mountain/Song of the South. I know Charlie and the Chocolate Factory's most recent major appearance was over 10 years ago but I believe it's a timeless Roald Dahl classic that could hold its own today; I reckon a boat ride down the chocolate river would go down well, and the gift shop too haha. Hill Valley 1885 would be a cool nod to BttF whilst having a fun Wild West theme, but yeah Aang/Korra Avatar kind of just died.
I think the IP is only a small part of creating a good theme park, Tron at Shanghai Disneyland is amazing and I don't think Tron is super popular, so I believe Star Trek could be of some use to a Sci-Fi "genre"land.