I remember a couple of nights playing mw3 where we a whole bunch of us jumped into a private match lobby and let it randomize the teams every match, and it was fun as hell. Everyone seemed to forget about lag and just had a good time shooting each other. If the teams ended up really stacked, whatever, they'll be random again next match. Even with blops 2 I played some chaos moshpit a few times with AVS guys and every now and then it'd throw us all into FFA....and those were way more fun than just stomping randoms.
As soon as people started organizing and breaking off into factions, picking teams etc...it was something other than fun, for me at least. I don't think anyone here has anything to prove, the good players know they're good....so why not just pick a time, people can come and go as they please, get as many people into a lobby at once, everyone stay in game chat instead of party, and just throw down?