Let me know if you're ready for someone to try do it for real (not with testnet). I miss the days of using Counterparty, despite its super clunkiness I also remember the time when atomic swaps on Bitcoin were going to be the gamechanger. Haha. Speaking of, I wonder if it even is still alive.
Me = a very average user, but very happy to try stuff like this with a holding hand. I am increasingly getting requests for a fair amount of stablecoin payments I prefer to swap to Bitcoin without going through an exchange though (the problem is they're all on BSC).
I do believe there is demand for a Bitcoin DEX. I have no evidence of this, but if I am the average Joe yardstick...