I did not buy Onslaught. But i only bought a second map pack for mw2 as well and i had no problem finding lobbies. I suspect that with a world full of players there's still plenty of people to match. Regardless, i really did not like Ghosts as the maps were too big on top of bad spawns, etc. The map pack was a last resort to hopefully extend the gameplay. I saw reviews of Devastation. 3 small to medium maps and that's pretty much why i bought it. Since right now there's about 6 or 7 original maps that i now just refuse to play most of the time cause they are bad. Unfortunately i bought the maps expecting it to be just like what i new from mw2 which was you just pick domination and eventually new maps show up. Not the case so sadly, after playing too much search for my sanity, all i play is regular domination on the same crap maps on the regular playlists. They mad add them in 3 months but I think the likelihood of me still playing this game still then is slim to none. In fact i played like 6 games tonight, got annoyed, check this thread between matches, got more annoyed and turned it off (first time i've rage quit based off the internet. Well that and Flood came up as a map).
They have their reasons for doing what they did. I get it. I can live with it. It's disappointing for me, since it defeats the only reason i bought it, or at least prolongs it to a point when i'll likely be sick of the game. But whatever. And sadly i don't want to sit through 5 search games at a plodding pace of guys camping to get to a domination game. It's their game they can do what they want. just for me as a consumer i just have to spend my money more wisely, like not on map packs. I didn't before. I shouldn't have this time. My bad.