One of the things that potentially sucks about not only these parks having their Aliens and Predator content rolled back, but also just Disney taking over the franchises in general, is I fear we'll never end up seeing either of them get the full-on theme park treatment they deserve.
Just imagine an "Aliens/Predator" land at one of the major parks that was basically a colony compound set in a jungle environment, so you had the Aliens half slowly merging into the Predator half with the appropriate rides and theming in each area. It could be fantastic! A dark ride where you've got to escape an Alien attack, only then Predators show up as well? Other rides too, but I loves me some dark rides, so dark rides!!
But Disney's never going to do a whole area given over to R-rated properties in their parks (we all know how that original Alien/Nostromo pitch turned out, and even then they got rid of The Extra-Terror-Restrial Alien Encounter that it morphed into), and even though it'd literally be money for nothing, I doubt they'd want to licence something that big out to Universal either.
So much potential we'll probably never see fully realised.....