So theres currently a WIP Gibbed's ME Save Editor and one of the first things that shows up in the RAW data is an "End Game Status" string with three options "Not Finished," "Out in a Blaze of Glory" and "Live to Fight Again." The later two only show up in an end game save use for NG+ or future import I guess.
Im not sure what this means exactly or how they intend to use it, probably for an ME4 import, but more specifically for my game Im confused because Ive gone back and completed all three endings, first time synthesis, second time destruction in which I got the Shep alive scene, and finally the Control ending. So Im a little confused as to why my current end game save says "Live to Fight Again" for end game status when both in my first completion and most recent completion of the last mission, both ended with my Shepard most certainly not surviving to fight again. Food for thought I guess.