Re: Sonics - tired power, need new ideas
Don't forget a Find Weakness based on careful analysis of the vibrations induced in an object ... non-destructive ultrasonic testing. Won't work on force fields/walls, most likely, but that still leaves a lot. (Hmm, BoloOfEarth got this ahead of me.)
Change Environment (the slippery floor thing, but in this case, it's a bouncing floor) inducing strong vibrations in the floor, so everyone falls down.
"That's so loud I can't hear myself think!" ... INT, PRE, EGO Drains, maybe even Suppress on mental powers. Heck, with the right vibration-induction you can Suppress machinery ("Hey! The car won't start!").
If you're really hokey, you could put together a sonic-based physical-only Force Wall by making the air molecules vibrate in phase (not allowing other material objects to pass through). The opposite effect, a limited-volume UAO Desolid where you induce a section of material to "phase out" temporarily by playing with the vibrations in the material, is also a possibility that's out at the hokey end.
Affects Desolid is a natural for sound-based powers with a lot of Desolid sfx.
And do NOT forget sonar. Simple Invisibility and Darkness turn ineffective.