Speaking only for MCH, I would definitely NOT want our shot combo consolidated like they did in PvP. For starters, it would completely screw up our proc system, and drastically change our established Wildfire rotations (again). Not to mention in PvP, we never performed a linear 1-2-3 combo before, instead combining the right skills for a very powerful burst, one of which was Clean Shot by itself. That crazy burst is gone now, thanks to this forced, linear combo (and the complete removal/nerfing of the other oGCDs that comprised it).

For jobs with rather rudimentary combo trees, it's not a terrible idea, but at the same time it's not needed. I think we're a little too worried about hotbar space where it's hardly an issue.