Given that we're seeing some really effective use of C3P0 in the HAAT and HSTR raids, and historically that has tended to end up with EA "fixing" (i.e. nerfing even though chars were doing what the te...
I dunno how many have tried the FinP0 combo, but it's not really an infinite loop in any situation. It's more like ns, where you get tons of turns if done correctly, but not infinitely. Eventually something will be slightly off and break the cycle. Don't think it really needs a nerf.