I think that the proposal has the right idea (making SP seem more appealing by adding more value to having it) but it is going after the wrong part of the problem. I think the main thing preventing a lot of investment is that there is not much value to have a medium sized amount of SP. If a user buys 5k worth of SP, they can only earn a few cents per day through curation, and their votes only give authors a small amount too. The solution being proposed to change curation from 25/75 to 50/50 would really only benefit the very large SP holders, who get most of the curation rewards from the posts. For a small sized user, I think a lot of people think "what is the point of investing 1k". If we could figure out a way to make that more attractive, I think there would be a lot more small investors ready to buy in.