With the connection problems that plagued The Master Chief Collection seemingly improving, 343 Industries has introduced the Halo 2: Anniversary Rumble playlist.
The playlist is currently set to 10 players max and does not feature ranking; however, they'll be modifying to 8 player max and adding ranked play once the existing matchmaking issues are fixed completely.
Shortly after The Master Chief Collection's launch, 343i removed a number of playlists from the multiplayer in order to allow for faster matchmaking. 343 Industries has since released a number of updates that improve the system and it shouldn't be long now until those playlists are returned.