^According to this very vague and somewhat confusing statement,
it sounds like they have altered the EMS thresholds to make it easier to get the so-called "optimum" ending. Now that might just mean they've lowered the requirement for not burning Earth to a crisp and/or unlocking the synthesis path. It might also mean they fiddled with the numbers somehow to make it possible to get the "N7 breath scene" without boosting the EMS.
If it's the former it won't affect me since in my playthough I already achieved those and if it's the latter...well that probably won't matter either since my EMS is sat around the 80-90% mark. That plus I'm in the midst of replaying my main Shepard.
Not so much for the ending DLC but because I encountered a few glitches in my first playthough that meant I didn't complete several side missions properly. I couldn't care less about the various fetch quests, but I kinda want the Kasumi, Aria and Conrad missions done properly, even knowing it probably won't make a difference.
Mike Gamble to the rescue