^Not the best analogy since Broken Steel didn't change the ending, it simply continued the story in a fairly logical direction. Plus I don't think it came about through direct fan pressure, Bethensda seemed to come up with it all on their own. The equivalent in this case would be a DLC in which Shepard awakens from the dead (again) to help the newly united galaxy wipe out the last vestiges of the Reapers and/or Cerberus. That's not what TBME is asking for, nor is anyone else really.