Creative ways to limit number of players

[raynes]

We now have the ability to auto-invite players so that takes care of 1/2 the problem, it still leaves the problem of limiting the number of players in a scenario. So I'm looking for ideas on how to solve this.

Basically I am trying to figure out a way to only allow one player in at a time. And if that player leaves before completing the scenrio how to reset it, for a new player.

Thoughts?