User blog comment:Kaloneous/Mass Effect 3 Ending DLC Denied and PAX/@comment-3062992-20120318230526/@comment-84391-20120319012515

<< Shadow Broker was a great DLC, but assuming it was in the works since January, it took nine months to build that 1.6 gigabytes we downloaded.<< At the very least, they were working on it since Mass Effect: Redemption, and there were apparently modeling/animation issues that kept Tazzik from appearing in LOTSB, despite being the main action villain in MER. There were sound files that hinted at an early blueprint in the vanilla PC game.

<<Assuming they ignore the Indoctrination theories some of the more passionate fans have conjured (a somewhat frightening thought), they need time to write a script with enough closure; banter for Paragons, Renegades and romantics; but also gunfights and action (in theory). Then they got to put all this together; the voice actors, the programmers, the modelers, etc. I can only imagine that if this is ever put in the works the way many fans would want it, the extended epilogue would have to be effectively three to five times as big as the Shadow Broker and could take close to several months to maybe over a year before a finished product is rolled out.<< You make this sound like it would be a full fledged bonus mission (or set of bonus missions). It wouldn't be. It would be re-integrating material alluded to in sound files (I think there's a YouTube video somewhere), with new content to filll in the blanks. There probably would be a bonus mission/weapon to prevent people from asking "why I am paying seven bugs for a patch/bug fix" (though some would still do that anyway), but if they were reintegrating potential endings that didn't make it into the vanilla game because of time constraints, then I imagine half of it's on disk anyway.

A "big DLC twice the size of LOTSB" would probably take place earlier in the campaign, involving Harbinger, batarians, or Aria sending you to Omega to get even with General Petrovsky.