I feel your pain so much. I've argued this same point. Best thing you can do, annoy the hell out of Muse at firesides/etc. Everything right now is focused on the LCD of GOIO, 2v2 matches. Heck I've often gotten 4v4s more than 3v3s and what is worse, when I get 3v3s, usually its just 1 or 2 people that prevent me from staying in the 3v3 because they don't vote. Which throws you back into MM and forces you to sit forever to find another 3v3. Really tho, we need the ability to stay if we want to stay and leave it we want to leave. Not have it dictated by everyone else.
They are feeling the pressure somewhat. Week or two ago I heard them actually consider bringing back lobbies for low pop times.