And please fix some of the horrible game breaking bugs in custom games 
They both have been in Custom Games since launch. You just boot the game offline and all the modes and weapons are available, and can be bookmarked for online play
Yeah but why do I have to boot the game offline? Why do I have to jump through hoops to enjoy the game? The majority of players don’t know this information and therefore won’t have access. 343 should use their infrastructure to encourage players to play all the modes, instead of hiding modes behind artificial walls like being forced to boot the game offline and bookmark the hidden modes for online play.
Not sure why they’re hidden online, but it’s likely because they were supposed to be a surprise for the events. Variants of Fiesta, Tac Ops, Attrition, Ranked, FFA, Oddball, and etc are all available if loaded offline. I expect them to eventually add them to the multiplayer playlists. We were supposed to get a variants playlist after the December holiday break, but it never happened.