I know that quite a few players have been asking for this for quite a while so I think they should add it Halo 5. It is a Custom Games Lobby. For those of you who don’t know it is a list of all Custom Games with privacy off, you could chose which games you could join so you can play a game of exactly what you want instead of having to vote in Matchmaking.
Please 343 if you still have time add this in if you haven’t already.