Re: "Leadership" multipower
I recently made a Cap homage, and gave him "Tactical Leader: Aid OCV 3d6, AOE 4m radius, Selective, Requires a Tactics Skill Roll, Limited Power (affected allies must be able to hear command and must follow it), Incantations"
So as a 1/2 action he can shout something for his teammates (within 4m of him) to do, makes a Tactics Skill roll (and you can ditch that part if you want, to cut down on rolling), and if it works everyone gets 3d6 cp towards their ability to punch the bad guy in the face (for almost always a +1 to hit, and really good odds for a +2).
For the points, it came out pretty well, I think. Something similar might work for what you have in mind.