Hola.
Obviously I am a fan of PoN too. And for me myself, unfortunately, is the turn speed an issue either. I've tried to let run in the background, but often I forget the game or switch back to the game too often. Well ... it doesn't work for me.
Therefore my question: What if your game is run by a server?
If it cost money, how about offering crowdfunding? I would happily pay 40 - 50 EUR at first and 70 EUR per year.
Saluds,
Paul