Part of me thinks they are holding onto certain additions til after Ep. 9 debuts. With Ep. 8 teasing gray area Force (aka no more light side/dark side) - it wouldn't make sense to have a Jedi temple in the land right now.
Your point brings up something else I thought of, though - They need to start consolidating Star Wars to just Batuu. Time to get rid of Launch Bay, and, dare I say, Star Tours.