This is probably very much not viable, I'm sure they're stretching the engine and hardware to the limits, but ... I think making terrain defects and having debris that lingers might add to immersion for a game like Singularity. It'd probably be a bad idea for multiplayer, and again not even for single player, but ... I think persistent terrain damage such as craters from explosions might add to the immersiveness of a game whose developers like to plug it as being massive scale.
