I'm not sure you're doing yourself any favors by using the standard AW basic moves, particularly the violence moves (sieze by force & go aggro). They don't fit any of the supers sub-genres or tones that I'm aware of.
I can definitely see the relationship between power stunts in the source material and moves in AW. But could you come at it from a different angle, though? Like, make the core moves represent the types of conflicts/actions that supers in your game take. Make their powers have tags & descriptors (similar to what you have now), with their own stat bonuses. When you describe using your powers to make a move, you roll +that power's stat bonus.
So I might have:
- Control Wind +1 (LOS, area, forceful, imprecise)
- Blast of Lightning +0 (LOS, 4 harm, messy, stun, limit:outdoors, limit:couldy)
- Control Weather+2 (LOS, area, slow)
(You'd probably need some basic stats, too, like Cool or Hot to handle moves that weren't done with powers.)
If I
maneuver by summoning winds to lift me to the top of the building, I'd roll +1 (for Control Winds) and on a 7-9 the "imprecise" tag could be really problematic. If I then
race against time to summon storm clouds (since Control Weather is slow), I'd roll +2. While they get here, I could
defend (myself or others) by hurling blasts of wind around (rolling +1). Once the storm clouds arrive, I can
assault the poor schmucks on the ground by unleashing a lightning bolt (rolling +0 but seriously messing them up on a hit). (In case it's not obvious, the italics are ideas for basic moves... just ideas, though.)
The "power stunts" would then evolve naturally out of play, as players wracked their brains with how to apply their powers to trigger the moves they want to make.
To prevent power-spamming, you could use a carrot instead of a stick: you mark XP the first time each session you use a power to make a particular basic move. Make sure everyone's got 2+ powers and you'll see some serious creativity, I think.
Bigger picture question: What's the tone of the supers game you want out of this? Like, sanitary Code-era stuff with little blood and no real consequences for the enormous violence that supers can dish out? Grittier Ultimates-style, where Bruce Banner Hulks out in Manhattan and hundreds of people die?
Finally, how is doing it with the AW engine better/more appropriate than, say, Marvel Heroic? Or Capes? Or With Great Power?