could you not make some of these game modes yourself? Obviously it would only work with people on your friends list, But he it goes.
All these examples will be 4v4
VIP: Set up a CTA game (a map where there are two airbases), and get half the people on A, the other half on B. One player on each team (chosen by the team members) will chose a slow moving bomber, such as a He-111, and this player may not fire his guns. The objective, to land you transport plane safely at the enemies airfield (full stop) before the other guys. Do a best of 5 so everyone gets a chance at VIP, then the tie-breaker (if nessecary) will be chosen by the team.
Tag: Set up a dogfight game, and select a person to be "it" from the start. Only the person who is "it" can shoot, to make it somewhat fair. If this player shoots down someone, that person is "it." The person who is it at the end of the game is the loser. This could be quite fun if you set boundaries, like you can only stay inside Dover Harbour, or you may not leave the Berlin area.
Survial/Team Survival: Pretty self explanatory, last person/team alive wins.
Well, that's all I got for now.