And last: if it is true that you earn 6000 XMR ( and who knows how many other coins) then I think you should  release little slower ( lets say 5 % slower) miners, and look what public will accept: your faster or slower miner.
5% is not small amount: I am very small miner, I have 1KH/s. 5% to me is one day of mining in 20 days...  Lower to 2.5 percent...