Idea for the Walker red eye/window issue - instead of erasing the red from the outside or tinting the whole cockpit red on the inside...meet it halfway.

Tint just the window red on the inside. Put some numbers, meters, gauges and such around the edges so that it becomes a red navigation/targeting/HUD type of display. It's still a window, just with this red image/data being projected onto it. If you really want to get picky, make a hint of red light spill on the AT-AT drivers in the wider cockpit shots where you can see them from the front.