the only thing I don't like is you get less reward compared to if you mine ETH direct and swap that for the coin of your choice.
"
Man eats where he works" or so they say. The reason the site operates is so that they can also earn something out of the miners. The Option to mine ETH or any other highly profitable coin and the swap it to one's favorite coin is much smarter.
I understand that Man must eat where he works but unmineable takes too much for charges, it's more than 5% per miner that they take you can do your own research to see things yourself.