Ideos with the tunneler or darkness meme seem to have a rough time in the cave biome, regardless the fact it's underground. Undergrounders get debuffs for being outside too much, which applies to the entire colony under that religion. So to keep my pawns happy, make the outdoors into indoors?

I get that the skylights to the surface are essential for anima trees and other crops, but if there is some way to only make ceiling tiles with sunlight outdoors without need of walls, I hope it isn't too much of a hassle. Biotech Dirtmoles will thank you!