I was play testing the new firekick in a L7 oneshot, and there was almost no reason to not be using it at a level where a DC15 is incredibly easy. perhaps we should limit firekick to once per round, or maybe only once per attack allowed by BAB, so Firestorm/Rapid shot couldn't be a bunch of kicks. Or possibly raise the DC for every consecutive kick.
on a slightly unrelated note, bending blasts provoke AoO's as other ranged attacks do, yes?