While I like those technical approach, I don't think changing the current reward dynamics on STEEM is a good idea. Because there are diverse opinions on this issue, as we can see many people's comments here, moving towards in favor of one side of them would make the other sides dissatisfied.
Rather, I argue for removing contents rewards, i.e. author rewards and curation rewards, from STEEM and shifting the role to sub-community tokens, a.k.a. SMTs. Steemit also can issue STEEMIT SMT that has similar or suggested (by @vanderberg) PoB economics to the current STEEM. Others like @trafalgar can issue alternative SMT that meets his EIP. This approach has several merits.
Given the approach, we can focus on SMT development and don't need waste time for debates and following code changes about the economic model.
Market models will work. Various approaches can be experimented and be proven their values in the market as a token price. This survival of the fittness environment will strengthen Steem's ecosystem.
By removing PoB rewards from STEEM, its inflation can be dramatically reduced, hence investors can be more attracted to the base currency STEEM. Also, investors don't need to compete with contents creators by self-vote, etc. to ensure higher ROI.
Given decreased inflation, we have more room for ecosystem-level experiments like Steem Proposal System by @blocktrades.
This change make STEEM as a base currency and investor-friendly token; they can earn identical ROI without doing 10 self-votes per day. For comparison, in the current system investors who don't self vote have much less ROI than those do 10 times per day. It will also reduce meaningless votes from investors' purposes.
Some SMTs can be built on the investors return. Good-will (or smart) investors, or Steemit inc. may launch SMTs which value and inflation speed are pegged to STEEM. I am sure there will be much more creative ideas for Steem's growth.
I wish the dev team solely focus on SMT and redeveloment the whole thing with the new paradigm, rather than band-aiding the current things.