Hopefully that redo of the Orlando Grinchmas show set, that Legacy alluded to, has aspects of the Whoville you're referencing.
I really do hope so as-well. Shame they didn't pull the trigger on a revamp of the show's script, but I could understand why.
That said though, this could work nicely as an expansion of Seuss Landing, separated off by a current that borders the two area's. There's one scene that'd make quite a bit of sense to base it off as a possible ride concept.