Match-Making is joke!

I get what people are saying about team balance, but what really gets me salty are either:
1. Loading into a game with less than 60 seconds left in the match because somebody decided to quit out before seeing the Defeat screen (what does that even accomplish?)
2. Finishing a game and being sent to an empty Lobby (why can't I stay grouped with the same players and roll over to the next map like when Co-Op was first added?)
It used to be where you could start playing Co-Op and get into an enjoyable run of playing for an hour or more without interruption, now it's occasional gameplay punctuated by long periods of waiting for a new team.

@DrunkyMacGreed #1 has happened to me many times but #2 has not. I've never been put into an empty lobby after being in a full group.