Yeah, I'm not sure how much the new system actually brings to the game. It's kind of novel to have to sit and think on how much you're going to throw at a power, but it's very abusable and it's one more rather clunky arbitrary mechanic to a game filled with clunky arbitrary mechanics. It would have been better to just write balanced psychic powers in the first place, and allowing you to Deny blessings and the like in some way.