Yeah I actually mentioned that ST Season 4 transition room. I could see them using that exact transition and just going into scenes that take place indoors in the wasteland (Yao Guai cave, house where the guy turns into a Ghoul, super duper mart). It would feel weird to have no scenes in Filly or the desert part of the wasteland, but I get it.
UBE has been home to some mazes with wide open spaces so it probably makes things significantly easier if they want to go big.