The only problem I have with that is...well, where would Humanity be? Would that have giant Galaxy Class-Sized ships, or would we still be recovering from the Reapers? And what about all those Prothean Ruins we found with certain DLC, (AKA Firewalker, and exploration in ME1). If we go forward a hundred years, will we get a definite answer as to what those mean? I mean, I just can't see ME-Verse Humanity being a ton more advanced, or a ton more different.
The way I see it, if you are going to jump ahead one hundred years, as in TNG, you really need to have more advanced stuff. If the Normandy is a Constitution class, then what will be the Galaxy class replacing it in the future?