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Many good ideas to think about.
Here are a few more that might help simplify things:

  1. Why not make all posts automatically self upvote to eliminate negativity?
  2. Self upvote rewards can be set to be the same, according to Steem Power, for all by steemit to pay the same (or not pay) curation rewards to the self upvoter (author). I understand that some whales and dophins use self upvoting for a good return on their investment, and a good return on investment encourages investors to put more money into Steem Power, so a steemit wide automatic self upvote could help reduce negative accusations and simplify things.
  3. Should upvotes that don't even open the post be eligible for curation? Maybe the length of time a curator-upvoter spends on a post (up to maybe 5 or 10 minutes or ?), the more curation % he/she can receive from said post.
  4. All upvoters could share the curation equally regardless of who upvoted first and how many minutes after the post up to 7 days, except for the amount of time spend on the post. This might help reduce the advantage of bots upvoting.
  5. Maybe to help minnows build Steem Power, all posts can receive a small minimum participation reward of Steem Power, like maybe 1 Steem Power (or?), limited to 1 post a day or ? Of course great posts can still receive great author rewards.
  6. Of course junk posts should not be encouraged, and negative votes should not be encouraged. It appears we may need a volunteer board of trusted judges to determine if a post that is brought to their attention is junk or not. And if a poster continually posts junk, he or she could be kicked out or lesser punishments as the judges determine.
  7. Please combine Math, Maths, Mathematics to default into one subject as there aren't that many posts there to require 3 separate subjects for the same thing.

Thanks for reading these suggestions to ponder.