Do you think there's any way you could mask out the back window in Vader's cockpit? I think it's only visible when he spins out of control. A quick fix might be to just color it red so that it seems to be a screen rather than a window.
And I know that Tellan is doing something similar, but would you consider redoing the Han and Greedo scene so that we don't see the long shot of Han shooting? I guess I find that angle rather underwhelming, even after your fix.