I know this addresses none of your questions, but there really is little to no point trying to rotationally optimal, when others in your group don't even have the basic requirements for their role. I mean a BLM without quelling... I can't even... you're either having to already use much more aggro combo just to hold off them, or their dps is incredibly low. From what you say, it sounds like the latter.

So while you can tweak your rotation about to squeak an extra 100 dps (? no idea, number out the air), what's the point if your blm is already doing far below what they could be doing