I've been lurking around some, and I hope it's enough to keep me from sounding like an idjut.
Anyway, is there any possibility to having some raking fire with multishot weapons like the chaingun? As in, you point to 2 different spots as targets and the game would fire between them in an arc. It'd spread the damage out some, good for fighting large groups, while doing less damage since you're obviously not hitting any one thing with as many bullets (To say nothing of the bullets whizzing off into the dark).
That was a nice trick back in the day, when Cacodemons flinched at everything and a chaingun could keep a whole room of them pinned down, if you were willing to waste half your ammo to do it.