We are currently evaluating ways to make delegation worthwhile again, but we don't plan to do the whole powerdown into payout thing, as it complicates and drags out payments a lot.

If P2P does not use all the voting power you allow it to, then that is a bug and you can tell us so we will investigate. If you set it to keep your VP at say 90% then it will do that +- 2% or so. And if not, come to us and we investigate/fix.