At least before you complain, let MMR in the new queues stabilize, and wait until they add dishonor back to the game before complaining about 4v5s or queue decliners.
Overall, I think that the new unranked queue and map vote system are great additions to the game. I still can’t queue on my main account due to some weird bug, but on my alt I had a few close games in unranked queue, as well as a few blowouts. It’s too early to pass judgment on the matchmaking system yet.
The new ready up before you are put into a game will prevent the large majority of afk 4v5s as well.