User blog comment:Kaloneous/Mass Effect 3 Ending DLC Denied and PAX/@comment-743796-20120317115558

If a new set of endings is indeed made, then they should be made in the style of the Legend of Zelda: Majora's Mask ending. For any of you who are unfamiliar with this game (no I won't really spoil anything), the ending has a number of major parts which are in the ending no matter what. After that, there are smaller, additional parts which can also contribute to the ending. These aforementioned parts are the result of completing various side missions in the game (some of which can have major implications on the story, or give boosts that can be used later). Most of them involve collecting masks and completing the missions associated with those masks. Once a side mission is completed, a small (or large) snippet will appear in the ending credits, related to the completed mission. Each ending provides a sense of closure for the mission.

How can this apply to ME3? Well, depending on the decisions made, small clips can be displayed showing each individual squadmate who's survived to this point (dependent on the squadmates you've chosen, as they may not be there, as well as previous squadmates from ME2 who've survived) fighting the Reapers. If you have a high enough readiness and military strength, all will be seen to survive; some would die (randomly) for medium levels, and most (if not all) would die for low levels.