I like it. What about if we made the option for a faster powerdown, but there was a fee to do so and that fee was paid in steem and that steem was burned? I have heard a few others talk about such an idea, but I like it as well.
Also, I think we need to try and create more incentives for people to want to power up steem. I actually think the EIP may go the opposite direction in that and we are still feeling those effects in terms of steem's price as a lot of people powered down when that became clear it was going to be accepted and adopted.
I am not sure what the best incentives are, but I don't think a 50/50 reward split for SP holders is enough of an incentive to get people to power up more steem...