It’s what little remains of the old HS concept- that you’re at a working movie studio. So the queue to ST looks like a movie set, the Backlot Express is meant to be where studio workers would eat (along with Hollywood Vine), Indiana Jones show pretends it’s actually filming a movie just like Lights Motors Action! used to, you’re starring in an episode of Twilight Zone on ToT, etc etc. Now the theme is you’re in the movies- TSL, the upcoming Mickey ride, SW land.