To go with this, and to answer the earlier poster, it's partially that, but it's also like, Tatooine. People say they wanted it. But that's what, the cantina? There is a reason Luke wanted off the planet. Also (and I remember this coming up at one of the GE panels I went to or watched over the years, there is the matter of climate. Let's imagine we recreate Mos Eisley. In Orlando. With the humidity. And every day for at least six months out of the year at around 3 PM, it rains. That's... kinda completely ruining the immersion aspect. (Yes I know CA and FL have different climates, but since Batuu was determined to be temperate, you can think of it as a dry and wet season.)
Then to go along with the OT is best idea, let's look at the worlds visited:
Tatooine - desert world, considered a nowhere land ruled by a Hutt
Death Star
Yavin IV - rebel base is kinda cool, but no population at the time
Hoth - ice world, with no sentient life
Dagobah - swamp world with a population of one Jedi Master.
Cloud City on Bespin - first truly viable world! Other than being almost entirely enclosed.
Back to Tatooine - you're gonna die here you know
Death Star II
Forest Moon of Endor - semi-viable? Does have a population, but they haven't mastered commerce
Basically we go to a lot of single-biome worlds that are frequently the site of major battles and chosen by either side specifically for being away from civilization. Cool worlds, cool movie sets, not very compelling theme park experiences to walk around in more than once.
Oddly if we go to the derided prequels we get worlds that could be plumbed for this sort of thing: Theed on Naboo, anywhere on Coruscant - save for the having to do levels and how do you do a skyscraper that tall, and such. But I don't see calls for those areas.
HP and the Wizarding World have the built in advantage of being built on school setting. Ergo, let's recreate the town outside the school. The first book has an ENTIRE shopping sequence! Horray, we've already got designs for our shops! These were two COMPLETELY different challenges to create a theme park experience. And heck Pandora got brought up by the OP, and it's not like that land has a bunch of exact touch points to the one movie. It too even takes place YEARS later.
Anyway, I've got to be up in omg, five hours to go see this land for myself, (and sorry to the person this ended up being in reply to!) I'm off to bed! aiiiiiieeeeeeeeeeeeeee
PS First movie I ever remember seeing is ESB, so I'm not some youngling here!