I mean, it depends. If you are talking warzone style maps, yeah, it’d be a mess. But something like Fallout 4 type of building, in which they are mostly cosmetic and not really a lot of it going on (much like the buildings in all PHG maps) I think it would be ok. Is just basically replacing trees for buildings.
Make it a post apocalyptic war zone. Abandoned cars, debris, ruins, etc.