Thanks for the feedback, the cockpit isn't finished yet but I think the size is okay. What might be throwing you off is the perspective & field of view. Here's a couple of views straight on. I imagine the interior as something like a World War 2 bomber, very cramped. The main body is dedicated to the engines/powerplant to get an AT-AT (or something else as big) off the ground and moved around, so the crew module jutting out from the main body is all the room the crew has to work in. I figure a pilot, co-pilot, loadmaster and a weapons officer. No as roomy as the Falcon, but not too dissimilar.
Seeing Fractals awesome work on the drop ship got me thinking about this again... Here's pretty much where I left it, but I think I'll give it another pass and see if I can't still pull something out of it...