Mixing war torn buildings in same maps where we have the current buildings would make things look inconsistent.

Having town areas as big as in the current maps composed solely of torn buildings would mean huge amount of work for JackMayol, practically remaking all building models with varying sizes, unless I'd start to create a war torn building generator support for the existing building generator. Fairly easy for me to say not going to happen -- we are too close to 1.0 for such an undertaking.

Also it could introduce issues with having to position collision models for all sorts of pillars and stuff if the torn buildings would be accessible on the roofs, and to have them accessible on roofs in first place, the bottom stories would still have to remain largely solid as there can be no accessible surfaces on top of each other.. so, it makes sense to stick with the current solution, no?

We have areas of ruins in some maps on ground level, that's as far as we can go pretty much. We might have some added dirty effects on the buildings, but currently the building surfaces don't have support for the same kind of effect the terrain has.