The Command center in echo Base.

Things I have noticed.

There is no Background noise in alot of scenes to convey that it is a working hub of operations.

There are people who are pretending to talk on headsets.(for instance when Leia says to a Rebel dude) Send the evacuation code signal. This guy should have a line even if it is quiet and underlying.

There are open Channels comms i.e. Loud speaker communication with the HUB before the battle but not during the battle.

I don't know if it's possible to somehow do something with the command center scenes during the battle to make them feel a bit more connected with what is going on because the scenes have to also focus on their own agenda. But it could be made a lot more realistic as the scenes come across as really fake compared to today's film making techniques. And the command center does not suffer before the battle they are actually fine.

Quiet Background noise like in the link below would go a long way in some of the scenes.

http://www.youtube.com/watch?v=pNhxg4dOlig

or control tower style noise

http://www.youtube.com/watch?v=LnIIkL4AJNc

I think when we also get to "This one goes there that one goes there" in the Hanger could also do with more Background noise too of all the troops running around nobody is saying a word in the background.

It's more about conveying urgency and more panic I think but subtle.