Join us on Discord: https://discord.gg/fcMcJrW
Well if you like building interiors only then this region is for you because according to the to-do-list thats really all thats left in hoenn is interior work.
I like doing everything but routes with just trees and grass since I find it a little boring but I will do anything Im told to. I mostly prefer interiors and buildings though.
Thats probably all you'd be building anyways.