My favorite part of ESB:R was the use of the AT-STs. If I were to mention one thing I’d love to see (and I know I’ve mentioned it in multiple threads), it would be the inclusion of Victory-class Star Destroyers at the Battle of Endor. The illustration below was an early sketch of a potential design for the Imperator-class, and was later adopted by West End Games to create the Victory-class, as they likewise did with other early designs (such as the Z-95 Headhunter, taken from an early X-wing sketch)
I have always loved the design and believed wholeheartedly it would be included in the prequels. I was utterly disappointed when instead we got the stupid looking Venator-class. I’ve got other ideas I intend to share, but if all I could ask for was one thing, this would be it.