This game is a dlc setup

That is story structure. Remember how just before beating Sarin you learned of these massive "Reaper" things that were not explained? The Protheon? Cerberus was only hinted at in ME1 through some minor side misisons.

The things you are complaining about are part of the meta-story for this series, and will play out through all three games, just like the Reapers and Cerberus were part of the meta-story of the original series.

They did a great job forshadowing the fact that the Reaper information will eventually leak to the public and all the panic it will cause, but makes no sense for it to come out now.

This game was focused on immediate survival and dealing with the khett threat. That was resolved well, but it was just the begining.

I have some theories at where the Quarian Ark is going, and it would not have made sense as part of the main story. Had they not built in the hints at the beginning and the end, it would have looked shoe horned in.

What they are isn't answered in the slightest in ME1, only what they do.
Where they come from is only answered if you think the answer is 'dark space'.

We knew nothing of the Protheans except that they were a) dead and the Reapers did it and c) the Protheans messed with the Citadel. We know more of the Angara.
Saren is not equivalent to Jardaan. Saren is equivalent to the Archon.
We know a lot more about the Kett. Also, not really a fair comparison. If anything the Kett are more like the Collectors, and the Remnant are ME:A's Reapers. But it's not really equivalent.

Well, we didn't yet know that the Reapers were organic/machine hybrids. Of course, Bio themselves didn't know that at the time either. Bio also didn't' know why the Reapers do what they do.

Did we actually know anything about the Protheans except that they were exterminated? Though I suppose we don't really need to know anything else.

And if you didnt buy the DLC's for ME3 you still wouldnt know where the Reapers came from

I think the biggest difference between ME1 and MEA is that at the end of MEA we don't really know who is going to be the BIG BAD of the series. ME1 tossed Reapers in early, even if their backstory wasn't explained fully.

Think DA series. In DAO you kill the big Archdemon and you feel like you are done, and from what you've learned as long as you mop up the remaining Archdemons there will be peace, rainbows and unicorns all over. By the time you get through DAI you realize that Archdemon was a small symptom of a much larger problem in what appears to be a fairly broken world.

Similarly in MEA we kill Archon, feel that all that's left is mopping up some Kett and once again peace and unicorns pooping rainbows in Andromeda. Hopefully it will not take 3+ installments to find out what's really going on. After DAO the games in DA series (in my personal biased opinion) stopped feeling complete.

This game is like a SW:TOR expansion. Toss in the hook, leave it in for maybe five minutes, create something else that we have to go do, bore the shit out of the player for the next ~10 hours or so, toss back in the hook for five minutes. Rinse and repeat enough times that when they finally do get to down the boss it is so anticlimactic that it's not even funny. Hey, voila.

I've just created a SW:TOR expansion.

I, for one, can't wait for Story DLC to turn up!

Because they're robots.

I said that it's not really equivalent though. I was just pointing out that the Kett and the Reapers aren't alike.