I'm going to hold off on voting for now, as I have a question that needs clarification first: SPS rentals are usually canceled manually by the SPS owners after 7 days and then the renter needs to re-rent again. So I'm not sure how that 1% weekly efficiency decay is supposed to work, as rentals don't last beyond a week to begin with? Unless you're just talking about OTC deals not done through the official renting mechanism, in which case I don't think this proposal will have much of an effect.

If you can resolve the above question to my satisfaction, then you'll get my vote.