I agree completely with your proposals up until this one:
"We should get rid of the reward-pool and just give it to the witnesses."
That kills the Steem.
Regardless, it no longer matters IMHO, as Steem has been reduced to possession by Tron in fact. Steem is kill atm.
If Tron and the exchanges execute code that prevents their exercise of governance, and code that prevents that same ability of any other stakeholder to undertake the Sybil Attack that has been successfully executed presently on Steem, then we may be able to bring it back to life.
How likely do you think that is?
When that has been accomplished, the proposals you suggest may be relevant. Currently they're proposals regarding a dead chain. Justin can just do whatever he wants with Steem today.
RE: De-Spinning the Spin - The real truth