The challenges are both of Disney's dinosaur films have underwhelmed and Universal Studios is always going to be able to do dinosaurs better because of Jurassic Park. It somewhat begs the question should they just try to do something else there?
Dinosaurs is a difficult theme to pull off as well as you have to theme it in the present looking backward (as is the current case) or give it a prehistoric theme which would render its marquee attraction out of place. Not to mention that a quasi-accurate pre-historic theme would lack a unique sense of place relateable to humans.
I suppose other paths would be an alternative universe dinosaur world akin to the old Dinosaurs television series, which is too old and obscure for a land, or some sort of Flintstone-esque vibe which doesn't really exist in Disney's IP library.
I love when people speak of historic/pre-historic times as if it was the Flintstones. Don't get me wrong, I love the Flintstones, but I never watched it as a kid assuming I was watching a history lesson. 
