as it works up to now, the power down rate is slower than the interest. people will probably let a few payouts go but then power up again because they will lose vote power and curation rewards. So I think faster payouts will give people more choice and the drop in inflation will suck out more supply than powering down users will be able to put on the market. A rise in demand will make people hold more than before where powering down did not reduce their relative positions like it will after the fork.