Curation rewards are already superlinear (and very harshly so at the mid-low level where they often round down to zero). I'm not really proposing anything that isn't neutral with respect to distribution at the direct level of curation rewards vs. whatever you get for not curating, and it might on the whole be a net positive for distribution if a wider and flatter base of voting influence means that a wider range of content is rewarded (and less is skimmed by "guilds" and other such schemes).
Quoting myself with emphasis added:
Vesting rewards are made somehow modestly superlinear (as curation rewards are now)
I hadn't actually looked at the equation for curation rewards. I was under the impression that they were based on SP, but linearly so (and i missed the parenthetical statement to the contrary when i replied).
If theyre already superlinear then yeah it would be (or at least could) be distribution neutral. Though, both curation rewards and vesting rewards in the new system would probably have to be less superlinear than curation rewards are now.
Because the extra concentration caused by superlinear vesting rewards to idle accounts like ben and dan (up until a couple weeks ago) would have to be counterbalanced.