I kinda stopped playing because
1) it takes ages to fill a game (on my rating range ~1700 it can take more than an hour)
2) hosting a game is really frustrating, when the game is 7/8 someone disconnects and everyone leaves (after waiting an hour)
3) joining a game usually isn't an option either since there is almost exclusively dual gap, thermo and stuff like that hosted (or one is excluded by the rating limits)
4) after a break of ~2 month I am too lazy to tryhard and get back to my old level, mainly because it's so hard to find a game anyway
5) the bugs really annoy me: when the game finally starts, two ppl always disconnect from each other or some other random shit happens
6) not working replays: I like to review my games afterwards, but since almost all teamgames desync when someone has a connection problem (or leaves or blows his nose) ...
instead I either make some cool maps (check the ultimate maps in the vault) or just play some other games.
Edit: I am hosting a tourney (34 signups already!) to encourage some more map diversity* and 2v2 play... lets see how that turns out. If it is a success I will also do a 3v3 tourney and maybe ppl will start playing other maps more.
*and to promote the ultimate series