DLC short campaigns

Every Halo game are really fun even Halo Wars I thought and the characters that are told in these games make it even better to play if you want a good sci-fi story. Halo 4 is set to release next year and for so long we Halo fans have grown to love/like these prequels that Bungie and Ensemble studios have made and there are so many things that we don’t even know in the Halo universe so I thought what if 343 industries made little DLC campaigns for XBL as long as ODST for 20$. This would be pretty cool I think two player over XBL for campaign and maybe 4v4 multiplayer or firefight for gaps for Halo 4 and other future big Halo games and one good short campaign would be that short story Head Hunters. So tell me what you guys think in the comments.