Has there ever been any legitimacy to the long-standing "rumor" of a Villains-themed park?

[Sirwalterraleigh]

Night Kingdom didn't involve the villains at all. Night Kingdom was a boutique park connected to Animal Kingdom... I don't know where you're getting that it had anything whatsoever to do with villains?

I didn’t say the concept DID involve villains...only that it was the closest one I can think of where maybe they could have utilized that. Just a theory.

And attachment to DAK was one idea...but it will never be known if that’s the only path it could have gone down.