Is this where I'm supposed to make a '
pouring salt on ice being effective' gag? Seeing as it's all a joke to you.
Also, you lousy farceur, you haven't thought this through to conclusion. Why would you even need to spoof a client that allows you to choose your own blocksize anyway? Just run BU and set your preferred blocksize to 1mb. Job done. You don't need to ask someone to code up NotBU. Or even stick it at 0.3mb if you want to take the lukejr approach (and don't mind getting forked). The world is your salty oyster.