I think four ball would be fun. We can play it now, just have to keep track on our end.
4 players in a stroke play round and just keep score on your own. There just isn't anyway to keep stats/ win loss records that way.
Game host would pick his/her partner and if all agreed, you could play for a sleeve of balls. ( I'd only do that with a group of people I'd trust to pay out though lol)
It's a bit surprising that WGT hasn't implemented it yet though, as it would increase the ball usage for the game. ;-)