After a 4v4 match is over, I almost always back out and re-queue because it's faster. A lot of times it will kick me anyway after I wait the entire time because there aren't enough players. And when there are enough players, it starts a match with bots instead of filling the gaps with people. I don't remember ever re-queuing like that in matchmaking on other games, so something is wrong.
It also takes way too long to click through all the rewards at the end of a match. I have to hit X like 15 times. Just show me all the different types of XP I gained at once, show me all the rewards I got at once, and I'll examine more closely if I care.