Increase curation rewards to 50%
YES. Keep in mind the 50% percent is shared to all curators. Mostly likely close to zero after distribution to curators.Use a convergent linear rewards curve (n^2/Cn+1)
YES. I don't see other solution at this time. If someone can provide a better solution and make it in action. I'll support it too.Use a separate downvote pool of roughly 25%
YES.
Another suggestion.
Make the upvoting bots set to $1 MAX. So the rich don't abuse it because they can buy them up.