First why would you put a new SWAT Playlist when the Halo:MCC have so many Issues??? Secondly i would say is that some improvement has been made in it is the Matchmaking for some odd reason, it takes only 30 secs to find players and then connect to them and join session! Truly amazing but… still the minimum count issue still remains after 7 or 5 players in the lobby it takes a lot of time 
The other Issue is that after voting and the map is loading it terminates the game and there’s no one in the lobby anymore The Good news is that for the last 30 minutes i have found 10 matches in a row! 
it Finds players and join them Pretty fast but… the bad news is 
when there is a minimum count or even when the lobby is full it migrates the host and then poof everyone is gone from the Lobby Please Fix this Issues 343, your close to your answer 
and the campaign Issues too, Thanks Alot!
The game is not going to be fixed, at least the way we were sold it.
They stopped fixing bugs a while ago and started accommodating them, very bad sign.
“Here’s a new playlist you can barely play. Hopefully you won’t notice the game is broken until Halo:5 Beta and pre-orders”
I can’t even find games in swat
They put it in because we love our SWAT! I like the fast games and instant kill gratification. I know it doesn’t take the skill of something like Slayer, but it is fun when you just want to play a few quick games.