Donāt like that it potentially forces you to migrate to a new key if the difficulty increases. How about posting notes which attach a piece of PoW to the key you already have?
Discussion
Donāt think Iāll increase the PoW requirement any time soon. Itās a good deterrent as-is. The reason the relay has pow32 in the name should serve as an indication of that.
Nevertheless, Iām playing with other ideas to allow standard pubkeys from accessing the relay with other means of PoW: Satoshiās.