Check this proposal from Stakenet Team about the initial architecture for the upcoming Stage 3 "Hydra" network upgrade

https://medium.com/stakenet/hydra-dex-network-upgrade-proposal-4b00a3a3fb8


The most exciting part of the Hydra stage is:

a percentage of all trading fees from the DEX will go to the Masternode network running the DEX as a commission payment for running infrastructure and the DEX/orderbook itself.