Good point. I wonder if the recent price drop will help bring in more investors, or scare them off :p
Another possible alternative would be to flatten the rewards curve even more. As far as I understand it there is a superlinear relationship between steem power and the weight of your vote so that 1,000,000 SP has more voting power than 2 accounts with 500,000 SP (as far as I understand). Flattening that relationship would effectively distribute the 'rewarding ability' to more users. Unless I'm mistaken.