Yeah, cave-ins are desirable. I’m not sure whether they’re explicitly part of the bounty reqs; we have kicked it around.
KA101 checks
Core issue 4 checks for unsupported gear/critters/vehicles/furniture. It does not expressly state “terrain” but I’m willing to consider that something GlyphGryph missed, and I’ve posted to that effect.
Update: and GlyphGryph apparently meant to leave it out, since terrain’s a lot more work. OK, don’t worry about it for now, CIB.