Not only would that require for us to wait for Smts and communities, it'll also require some SMTs to reach a level of recognition, legitimacy and market confidence that would dwarf the underlying Steem token for voting behavior surround that SMT to be indicative of its viability in terms of economic incentives.
This is basically impossible in any reasonable span of time.
Just because we have to speculate over the the economic equilibrium of a change doesn't mean we don't have any intelligent things to say about it.
100% hyperinflation is a bad idea, because in 30 years, the currency increases by 1,000,000 times
n^2 is a bad idea, because someone's who has 1000x your stake will have a vote 1,000,000 your weight
linear and low curation is a bad idea because it leads to content indifferent profit maximization voting behavior (ie self voting and vote selling)
I don't need to test these to tell you they're completely off. I can also give you numbers around around curation rewards, rewards curve, separate downvote pool size, curation curve that are at least not completely off and likely conducive to getting the behavior we want at an acceptable cost.
It's hard to do worse than what we have so what do we have to lose? The status quo doesn't merit caution. Why fear changing it?