its fantastic how with some simple elements one can build a great variety of "manual"-procedural buildings just by using the outerra editor
(...guess which of these buildings are "procedural"... ) (framerate does not seem to suffer a lot even with tens of thousands of building elements placed in the scene ! how powerful outerra is !?! )So we need procedural buildings from devs as well ! 
(...hmm..or maybe I write myself a mod that generates random procedural buildings...just need to find which is the "procedure" )
....and in addition all the procedural ones are distructible in an incredibly realistic manner using the inbuild bullet-physics!
