So I just realized I completely forgot to talk about ship design.
I love the Normandy SR1 and SR2 but let's be honest... as designs they are failures. I don't even mean the SR1's CIC with the odd placement of panels against a wall, which is because of re-used textures:

No, the worst part is that both ships waste a lot of space on hallways. The SR1 has lots of hallways, stairs and generally empty areas. While the SR2 has half an excuse for being an "civilian" vessel with several areas not necessary for a war ship, it's still wasting space.
Why is that a problem? Because it takes a lot of effort to pressurize large areas. It's very difficult to close off sections if there are no bulkheads anywhere. This is a safety risk. If the Normandy gets hit anywhere on the CIC deck, then the entire deck will lose air. The SR2 at least has a bulkhead right behind the pilot and a force field between the CIC and the work stations. Which will do nothing when the power fails.
Speaking of work stations... why are there so many? What are all these people doing anyway? The narrative has Joker (and later EDI) do absolutely everything on the ship. Navigation, piloting, communications, scanning, weapons... at that point I have to ask why I need all those nameless people on my ship.
The hangar is a mess, too. Look at it and imagine you have to load cargo into, jump out of it in the Mako or... and that's the critical part... get caught with the Mako on your way back from a mission. Because that would result in a severe crash every time.
There is a lot more I could say about ship design, the crew etc... my point is: Let's not do that again. I know it's kind of necessary to have high and wide hallways because of the camera ingame. Fine.
Could we at least talk about the crew? Maybe a Star Trek like crew would be better? Dedicated officers for every role? One pilot, one navigator, one weapons officer, one science officer and the captain?
I'd also like to see all cargo being secured before we leave dock, cause the last thing you want is stuff flying around during combat. The SR2 would never pass inspection and in ME3 you also get cables sneaking over all the floors.
Which is also weird... either we have artificial gravity and can compensate against motion effects or we don't. It makes no sense for some scenes to show people stumbling because of sharp maneuvers and in others casually walking around or are even fighting in the hangar, never noticting that the ship is moving.
Please BioWare, take into account that not even the Turians would build their ships that way. The SR1 design doesn't even work anymore in the much bigger SR2, because you can't see your pilot from the CIC.
Our ship in ME:A deserves better. Don't just design it to look cool, please try to be practical as well. At least give the crew working in the CIC emergency seats and seatbelts, otherwise they all have to stand and hope for the best.