so are you suggesting that when you powerup you should raise your powerlevel? Its a nice idea, but it would have to be capped at a certain amount, for obvious reasons (people hide for five minutes and when you next see them they have a PL of 50,000,000)
anyway, i think things like this have already been suggested, but its a nice idea
what i think is that they should have a certain amount it can go to, and that amount increases like it would normally, so your powerlevel wont ACTUALLY increase unless you powerup to your maximum. This way you could hide your powerlevel too