The year
Mrs. Haus
and I went to Vegas for a vacation was around a year before they shut it down. It was glorious for Trek fans (i.e. her, I like Trek but I'm not insane on it like she is). And yeah, we have a couple of the souvenir glasses from those warp core breaches in our game room somewhere on a shelf. Absolute shame they undid that.
With the emergence of "adult geek culture" in the last decade or so that, a Star Wars Cantina, an Adult Lego Experience, etc (maybe even a "Dalaran Experience") could probably work now, but with everything there on the decline I don't see things moving that way.
Last time I was there for a work thing we did a customer event at the Meow Wolf place and it was pretty interesting. (Go hit your tube for "Omega Mart Videos" for an idea of what it's theme is like, essentially cosmic horror wearing a thinly done veneer of Walmart)