“As part of trying to build the game, as ambitious as it was, one of the things we weren’t able to do technically was to have the support in the game itself for certain kinds of downloadable content,” Hudson said, speaking to the first Mass Effect and its hang-ups.
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Hudson continued, saying that "pretty much the whole team" will begin working on DLC once the game is ready to ship, and that content could be influenced by fans: “Once we’re done working on Mass Effect 2, pretty much the whole team switches into working on really cool downloadable content. That’s where we like to listen to what fan feedback is for ‘where do you want to go’ and ‘what kinds of things do you want to see.’ “
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DLC details remains unannounced, but if a recent retailer survey has the right of it, we can expect “planned episodic combat via DLC,” weapon and armor packs, new downloadable characters for the “campaign experience,” new downloadable worlds, as well as “full campaign expansions for download.” And all of that is in addition to some sort in-game "periodic update" network dubbed Cereberus Network.
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“What we found was that the content we could produce with a small team in a short time just wasn't up to the standards we wanted to produce for DLC,” she continued in response to our question. “We were able to produce more uncharted-world level content in a reasonable time, and that's what we originally envisioned ‘Bring Down The Sky’ as being, but in an early project review we just didn’t feel that it was measuring up to what we wanted from DLC.”​