Ranked 2v2 or 3v3 with small map or restricted area on actual maps would be really lovely. Furthermore a fast tournament mode (like in call of duty with 8/16 teams (with 2 / 3ppl) playing at the same time) battling through the single elimination ladder would be even more sweet. We have already searching for public matches so adding fresh module should be easy, yes? (no, lol. nearly 9 years now of development intensifies)
Generally about losing interest in the game. It has no system to attract old and new players to keep playing. There is a big space for things like badges / levels / ranks (?) / Obtainable (not purchasable!) Cosmetic things. Except rewards there is no personality in our game characters (besides face, height and clan). We need our custom coat of arms or at least some customable templates. We need something more than this maybe custom signature of our foe showing below after killing us (again from cod xd). There is no private servers like in warband so the game can't handle itself without something extra at this moment.
And yes! - we need more interesting modes like this proposed in the 1st post even if the meele inf is ****e right now.
Just my opinion