yeah, that could be interesting

I wanted to learn how to use zero fee transactions because they can improve several of my projects, including hedgehog and my statechain implementation

I also came up with a coinpool idea recently that benefits from zero fee transactions

But first I had to play around with them to learn how they work, and now I know how to do that and figured I'd help other people play with them too

supertestnet

I like the idea of moving an already coin joined UTXO with zero fees and a few other participants. I bet there are tens of thousands of 1m sat UTXO's still in Samurai's whirlpool that need to be moved.