Do you think Disney will ever drop the timeline and let characters from all over be around? I think it'd be for the best, and its slightly disappointing to be stuck in the sequel era when you can go one park over and see two Captain Americas, characters who have died, etc. Avengers Campus is lacking in important things (like a major E-ticket), but the frequency of characters really keeps that place alive and I'll always find a way to walk through the land whenever I'm visiting DCA just to see who's out.
GE could easily do the same at this point. Just schedule the different eras at different times (Kylo at 11:30, Vader at 12:30...)! With Book of Boba Fett around the corner they must be punching themselves for not being able to have him wander around. Or even Mando with Grogu!