I was pretty much thinking of the 2nd Edition Ork Codex when I thought of some of these things, yes.2ed Orky gear... = lots of random effects.
I didn't think that far ahead yet, but it wasn't a simple "scatter" roll like how Ordnance is affected. I'll use an example to explain because it's still rather early in the morning.Hmmm...
How would the scatter dice work with weapons that don't have a blast marker? Would you place a small coin, or would you simply assign hits to the next unit in that general direction?
The Tactical Squad shoots at the Warp Daemons, however they create a warp bubble to deflect the shots. The bubble is created within a range [whatever that may be], and the scatter die is rolled. The shots from the Tactical squad are now bent in that direction, to the extent of their maximum range [even if the Daemons were, say, 38" from the Tactical Marines, a deflected Missile Launcher shot would fire 48"], unless it hits a unit/terrain first. The shot would then affect whatever it hits as normal shooting rules, although affecting friend or foe.
Perhaps the warp bubble could even be created to defend units that aren't the Daemons themselves.