Great work. This list is very helpful. I've read recently that the real profit from 0x exchange (only their comission) is very small, almost over 3000$. Also Binance will open their dex platform for all users soon.
Dex exchanges tend to have really small profit but the exchanges requires little resource anyway. No need to provide customer support or anything, just provide the website andnthe server and the community will automatically trade bu themselves.