Hm, this is a rather interesting topic. Not the usual "Too many teams", but that teams lead to more teams, a domino effect.
After a couple minutes of thought, I don't see any true solution that would help ease this situation. Your idea of the community getting together and force themselves to play solo I don't see as a viable solution. While many people team due to the 'frequency' of teams in-game, there are also the other players who team for other reasons. Myself, for example, will admit that I hardly play solo, and tend to always be playing with a friend. Why? Not to win every game, but I personally find it much more enjoyable. If we were to do this community agreement, I wouldn't find myself assisting in this, for I just don't find solo play fun.
Also, how are we sure that it will convince players to start going solo again? In a team, your main threat to losing is other teams, for you lose your advantage. By many people going solo, it's only making teams easier to win games, and encourage those who team to continue to do so, backfiring our plan.
Those points are not guaranteed, but just something I wanted to bring up in regards to your plan. Besides that, I don't see any true fix to this in our current state of things.
(I feel like there is more than I want to say, but I'm not sure how to put it into words. Might reply again at a later time if I figure it out.)
Vigilo... dude... nowadays there are at least 4 to 5 teams a game varying from 2-4 players a team. It's really not enjoyable to get targeted by each and every single one of them untill you die... it just makes the game un-enjoyable....
4 to 5 teams a game? I have no idea where your getting your numbers from, but from my recent study (which can be found
here), I don't see your claim as true... From what I've found, it seems to be more so a guaranteed team of two, but a team of larger size seems very uncommon. Wherever your getting your data, I'd like to see it.