Let me throw this into the mix. In terms of online multiplayer play, do very large numbers of players, change the MP experience, and if so, is it a positive change or a negative one?
I'm talking games where you're looking at 24 players and above. Not your usual 8 a side MW shooter maps etc.
I've played a lot of Arma 2, so to me, being surrounded and in the midst of a steel cyclone with artillery and air support going off in the background feels as a normal as breathing. Probably the time when my gaming senses really get perked up is when there are more targets than you can count and they are all trying their darndest to kill you.
As such, in that kind of maelstrom, I always found, (maybe this is another PC focuses thread, I don't know, are console gamers equally co-operative?), that people were happier to play the myriad of supporting roles that help an artificial army function. Never needed to worry about a lack of medics, or AT soldiers, or helo pilots, or tank or truck drives- someone was on it. Ask for mortars or artillery or air support and someone was there, asking for a mark on a map or co-ordinates.
Is people say yes, bigger battles are more fun, should we aim games more in that direction, and include less of the stuff which traditionally hasn't even been looked at in traditional first person shooters? Ie mortars, artillery, and so forth?