allow the author of a post/comment to specify the percentage of the payout that goes to the author (with a hardcoded maximum allowable percentage of say 20%)
This does not make a lot of sense to me. Maybe I'm misunderstanding it.
I somewhat like the idea of allowing a variable split, except for the issue of cognitive load. Display of it should probably be some sort of advanced/optional feature. People who are just voting for what they like and not trying to be professional curators should not be pressured to care about curation reward details with visual clutter. Either way that's not a blockchain issue though.
Absolutely 1000% agree with getting rid of the 4 post limit.
My mistake. I meant to write 80% (as in minimum 20% goes to curators). I fixed my post now. Does it make sense now?
Yes, I worry about the cognitive load too. Perhaps displaying it by default isn't so important because of the minimum going to the curators. Perhaps by default it could just use some icon to indicate whether: curators get the hardcoded minimum percentage of payout for this post; curators get 100% of the payout for this post; or, custom payout for curators (hover over icon to see detailed percentage).