Why did they remove it in the first place? It was the best and so much fun.
The DLC maps are already in the normal BTB playlist. What we really need is for 343 and Microsoft to release all DLC and Annivesary map packs for free and then everyone can download them and then we may start to see these maps pop up in the lobby more often. Maybe instead of giving away a game for free download one month we can have the map packs instead.
As it stands i think i have seen only one DLC map in the BTB playlist come up in the last 12 months in the voting lobby and of course everyone voted for Hemmorage.