Yeah, I'm getting a bit disappointed with Steem CPU mining also.
"How about we add another Miner-witness queue that takes turns?
How about only allowing one ip address to mine with only one miner?"
I think these are good ideas to keep the POW queue more descentralized.
I posted my complain about this unfair issue a few days ago:
https://steemit.com/tag/@cryptohead/steem-mining-queue-dominated-by-the-rabbit-servers
Unfortunately nobody has provided a solution yet.
Thank you. A solution to solve this issue is needed.