Oh and I forgot one thing.
For the Transcension, I would scale the price of Power too, not by much (as the Candidates), it give something to do since we would need to grow the Power cap. Right now you don't have to do any rituals when you get the 3000 cap, you can just Transcend and nothing changes, so we can "finish" the game by just reaching that cap once, but if it scale then you have to beat it again.