Co-op/Team play Variant?

By zerosozha, in Runebound

I'm brand new to Runebound, and while I and my players enjoy the competitive nature of the game, we were also kicking around the idea of teams of 2v2 or 3v3. I haven't sat down and thought about it yet, but I'm wondering what the best way of handling such a format would be.

The biggest problem, I think, would be how to perform combat & encounters. Off the top of my head, I would have the players draw a Challenge for each Hero in the team, and have that team decide which of them is going to tackle which challenge, with the Heroes receiveing the spoils of whichever challenge they completed. PvP would work similar fashion. Also, during the Escape phase the teammates would have the opportunity to switch opponents.

Any other suggestions on how to go about building this particular varient would be helpful; and if it already exists, I'd love to see the rules for it.