One of the growing attempts at games appears to be a push towards team play and/or playing with your friends.
One of the most popular comments in Random Matches seems to be "Stupid Team", "morons" and variations on that theme.
Now I don't happen to have the time or desire to be in a clan right now, and I don't follow all the events and options. But, if you want to peak some player interest, how about a season of clan ranked battles, where clans that make it to the finals get some badge or stick to acknowledge this, maybe more so if they played in the first round of finals. But, the top three clans, and their players who played in the last deciding games get REAL MONEY !
Additionally, ALL players get to do a fantasy football type selection, with in game prizes and trinkets and benefits like any other event.
I'm sure there's some logistics to work out, and maybe this only happens on the American server (because we're awesome) to start with. If Front Line events, and similar can change the evening player count from 17k-22k up to 27k... And event like this, with streaming and enough fan fair could really pull in players to participate. Just work it in with 2 or 3 new maps, and some incentive to play (like the higher play volume during the day or days of the week gives you bonus chances in the fantasy football part or something)...
At this point, I just want WG to continue to succeed and put out more maps for interest, so I can tank on...