There was 50/50 curation before steem became public, it was changed for publicly unspecified reasons.
At this point, i am against changing it back based solely on stinc favoring it.

With a 500mv cap on influence we solve most of our reward pool issues.
I like the n2 because buying stake needs to have rewards.

These parameters change the rewards from 10 votes giving ten posts 30% of the pool daily to several hundred accounts giving significant rewards to many more authors.