I finished watching Workprint 2.3, and I noticed 2 things:

11:25 - ATTACK OF THE JAGGIES. I know I've brought this up before, but these jaggies in the xwing still stand out to me. I really think manually rotating the xwing will avoid this issue. I'd be willing to take a shot at it myself frame by frame in Photoshop, if that would help.

12:46 - As the shot fades from the explosions to Luke in the cockpit, the screen looks gray and blocky.

15:55 - The Rebel tactical table is too blue. I think this is an SE issue.

Reel 1 of WP3 looks good. I think everything I noticed has been brought up already. Since you're the one with the references, Harmy, I'll just trust in your color choices. FYI, the only way I would get WP3R1 to play was to download the latest version of VLC Player (the old version I had worked for all the other workprints and videos).