>>58533118Honestly, 1 model would be a ridiculous achievement because that means they can't rely on tricks off screen to help render the map (well actually there are other tricks there to make it perform better too).
Probably next to impossible for the switch to do that other than small miniature models for cutscenes. 
But it does seem like they just merely extrapolated the smaller model and probably thought they would eventually fill it up and detail it more... but of course the schedule they release games on nowadays makes that impossible so you just get their "draft" essentially. You can tell because the dungeons and underground maps are much more heavily detailed and look really good. I'm actually a bit pissed off that they just shat this thing out prematurely and made it kinda crappy.
There's gameplay changes that pokemon has desperately needed for some time there. I guess they were going to make this area part of a larger open area too, but gave up and just tacked on walls and obstacles to prevent that sort of exploration of the city.