While Tatooine is probably one of the best known locations from the movies, it's also a desert planet, as in no vegetation. They'd have to remove all the trees and plants and dump tons of sand and rocks over everything. And I can't think of any venue on Tatooine that anybody would want to visit. It was a barren, desolate wasteland of a planet, bleak and boring. Luke couldn't wait to get off of it. Mos Eisley was a notorious hellhole.
Batuu is Mos Eisley without the decay and crime. A nicer place perhaps but it wasn't in any of the movies, unlike Harry Potter's locations, so visitors don't feel immersed ih the SW films like they do at Universal's Harry Potter areas.
Now, the interior seating area of the Millenium Falcon is great but you can't access it unless you go on Smuggler's Run, and even then you can only stay in the general area that's seen in the movies for a few minutes before they put you on the ride.