I have a question similar to number 6 on your list(Q6: What if people start grouping their votes, or selling their votes? Isn't that already happening?). You said you shouldn't do it.
Does this include miners?
I asked a few days ago here : https://steemit.com/steemit/@robohack/miner-self-voting-bad-form and got no answers or comments. I don't view miners using their mined steem power (mined into multiple accounts out of necessity)to upvote posts to be much different from someone who just bought steem power.

What is your take on this?