User blog comment:Kaloneous/Mass Effect 3 Ending DLC Denied and PAX/@comment-1786741-20120315011618/@comment-211.30.37.216-20120315021509

From what I've read, the ME3 ending was supposed to end the "Dark Matter Killing Stars" storyline foreshadowed in ME2 by having the Reapers committing the cycle as a way of stopping Dark Matter from eating the universe and that Shepard would have had two choices: sacrificing humanity to somehow stop the Dark Matter or killing the Reapers and finding a solution without them.

Then EA stepped in.