yeah, that strikes me as a pretty fair proscription, unfortunately-- the skill gap from coordinated team play in any team game makes it to where teams that play often together are matched against ad-hoc teams of individually more skilled players to make things "balanced", which were it even be possible to do this in the "50% win probability for each team" sense still leads mostly to unfun matches one way or the other. and, of course, queueing with friends you don't play with often, or with high skill variation amongst them just completely screws you from a balance/rank perspective (but hey, at least you get to lose together with all your friends! :).