Even then, they shouldn't be ruled out of at least cosmetic changes to Jurassic Park Rover Rapids. I would imagine it wouldn't be that hard, and that they wouldn't even need to do any changes to figures, just presentation of the area around it.
Perhaps that's only my thing when it comes to that.
As far as Hollywood, I'm curious of the exteriors around, as one would assume the archway is getting removed with a new one brought in. But the question, could they do exterior changes on Jurassic Outfitters and Jurassic Cafe (which I fully expect to get a remade menu) to match the more modern designs from Jurassic World?
It's a fascinating idea, and would help tie in River Adventure with the rest of the environment.
Another thing would be the fate of Dino Play, as I can easily see it to now due to SSFL filling that void for the park in a wet/dry play area.