not quantitative more self votes but a higher relative distribution of the reward pool to self-votes.

Self votes are already today the most profitable way to earn with your own votes - but still people sell to upvote-bots which are less profitable.

My concern would be: effective (self-)votes mean more income inequality since the initial wealth distribution is already a power-law or some extreme distribution and after n-rounds of voting it would be even more extreme. Selling votes is even more extreme right, but isn't there any way to overhaul the whole distribution dynamics?