The idea, which I had expressed multiple times in Telegram, is to discount the atomic swap fees (up to virtually zero), for Nimiq addresses who have a running stake, based on amounts of Nim.
(Of course blockchain inherent fees would still have to be paid, I am referring just to the swapping service).
I don’t know if this can be done, and eventually if there is a way to extend it to swaps not strictly regarding Nim (BTC/USDT/USDC).