I was wondering whether there would be enough people for us to play an ArmA 2 mod, specifically, Cipher. It supports up to 10 players, all in single unit. Objective is pretty simple. Find the suitcase and get to extraction helicopter. Interesting part is that the location where you start, the location where enemies are patrolling and the location of the suitcase are randomized every time you start the mission. There are 2 versions of this mission, Chernarus and Takistan. Biggest obstacle that I an think of would be hosting, in that since steamworks update, I wasnt able to either create or join someones server. Tunneling services like Evolve work but are unreliable with high ping and unstable connection. So, interested? 
Chernarus: http://www.armaholic.com/page.php?id=6768
Takistan: http://www.armaholic.com/page.php?id=10944