How about a Bomb the Carrier game. Much like the zep game one side protects the two carriers and the other bombs them OR the two sides have a carrier to protect from one another so the red has a carrier to protect while they have a carrier to destroy, same with the blue side.
Divide rooms so higher ranks players pkay with eachother while lower ranks play eachother. Higher ranks like group captain and up, middle ranks like squadron leader to wing commander, and lower ranks like aspirant to lutenent.
Clans!!!
And........cant think of anything else