The crux of problem is a mixture of rewards; investors want to maximize profits using contents rewards, and contents creators are competing with investors on the same resource.
I think we'd rather have to focus on SMT and separating the heterogeneous incentive system
Thanks to the investors the price goes up. By contrary, the inflation and rewards makes the price go down... I think is impossible to separate investors from content rewards without letting the steem price go down.
For this reason I think we have to deal with this "mixture of rewards" forever, and try to find a better distribution, like this proposal.