Your guess: construction start/end dates for MEA Arks?

Ok, I have a theory, like my ULTIMATE ARK THEORY.
I don't know how to resolve the lack of advanced technology, but I have a theory about the game's premise and how to toss away the Reapers menace (but not ignoring completely)

We know only two things about the game: 
First, it's about exploring. They want us feel the awe for new worlds, the unknown, the excitement, the adventure.
Second, we have to find a new home for Humanity (and the rest of the MW species I hope...)

The problem? How can they attract new players without put us --the older Mass Effect fans-- aside? 
They have to start simple, so don't expect more than a black screen with a couple of paragraphs in the game. The Reapers cannot be the centre of the Initiative, moreover if they will be forgotten in Andromeda.


So, my new (and hopefully last) theory about when we leave is this:



The Occam's Omniblade: The Simpler, The Better

The construction of the Arks starts decades before ME1 and we leave BEFORE the events of ME1.
The Project from the start is all about going to Andromeda (reason?  "Because it's there!")
The Project is a Human Initiative to explore! (because Humans are the craziest) But more people from other species come along (because we don't have the monopoly of crazyness). Mac Walters mentioned about people with different reasons to go to Andromeda, but possibly none of these reasons are because of Reapers, we don't know about the Reapers yet. 

The people who have signed for the Andromeda Initiative has only one risk in mind: the travel is one way trip and there is a high possibility of dying in the journey before arriving in Andromeda. That explains the amazed "We made it" of Ryder's in E3 Trailer, the odds were too high. Then again, why to go to Andromeda? BECAUSE IT'S THERE!! Then again, no Reapers on sight. The Project is not a secret because it's a suicide attempt for SCIENCEEEE. And the results of this given Project won't be known until 600 years later (and probably nobody in the MW will know or care).

And now it's when simplify works:
We arrive to Andromeda alive. All people is happy and celebrating except our father/captain/person in charge. Maybe Ryder investigates or maybe that someone in charge tell us: communications with Milky Way don't work and there are horrible news. The last message received was sent 594 or 597 years ago. In that message the Council/Alliance tell us about the Reapers. Earth and Palaven have been occupied, Thesia has fallen (here the comment of the Asari councilor after Thessia mission) and the Milky Way seems doomed. So, from our perspective, we are the last Milky Wayers alive. 

Now, we are in a very difficult position: we are the last survivors of multiple species and now it's not only about exploring for science. Now we have to make plans against extinction and we weren't prepared for that.

Bonus: DadN7/Captain/Boss command us not to tell anyone about this (is bad for morale? or is good for morale? I don't know!), so one of the first decisions we can make is to tell or not to tell the members of our crew.



... and that is. More or less, I still thinking about it. 
Don't tell me, I know:




The answer is