Astroswap DEX which is a cardano based DEX, they have started giving the DEX transaction fees returned back to the users in the form of Velas (VLX). This type of the rebate program is going to be pretty much new feature set among the DEX competitors. I hope the market is going to compete on this type of approach for every blockchain, lets see what happens by the end of this year. Check out the Astro DEX: https://www.astroswap.app/