And Mindor artist Dave Seeley talks at http://starwarsblog.starwars.com/index.php/2008/06/16/dave-seeley-talks-mindors-got-back/ about the cover art.
"My favorite aspect of Luke was as the hotshot fighter pilot, but that isn’t really covered in the films, it just sort of “is.” The idea of him on the battlefield, with a ground up vista of Rogue Squadron behind him, was the seed for the ‘Rogue Leader’ CIV image. Before I took off for CIV, I sent the image to Dave Stevenson, my Star Wars art director at Del Rey, and he replied that he just might have a book coming up that he could use it for. I related that story to an enthusiastic fan at Celebration, totally forgetting that fans know the projects in the pipeline years ahead… and that fan said …”that must be Luke Skywalker and the Shadows of Mindor!” That was the first time I had heard the title. The image was up for serious consideration for Mindor in January, when I got a call from Dave asking did I leak that they were using ‘Rogue Leader’ for Mindor? ….Which I had NOT….and in fact didn’t even know that they had decided to use it. After a web search, I found the source of the speculation, which was a thread on TheForce.net recalling that CIV fan conversation, and speculating that they would use it for the cover. I read over the many-page thread, and most were stoked that it might be used, but many were disappointed that they wouldn’t get to see Lord Shadowspawn and his shiny black troopers…and I thought… man, I’d like to do THAT! Soooooo my brain got-a-whirring, and I pitched the idea of spinning 180 degrees (front cover to back) and showing the view from Luke’s knees back at what/who he was charging…. Shadowspawn, shadow troopers, and AT-AT walkers!
The only reference I had for Shadowspawn was the Tommy Lee Edwards pic for The Essential Chronology… and it was thankfully very abstracted, so I got to fill in lots of detail. I got a kind of Napoleon-Revolutionary War Admiral-Pirate-Samurai kind of vibe from it, and went with it for character design. I loved that he had an over-scaled sword hilt on his lightsaber that looked Middle Ages in a Japanese-techno vein…. so I gave him a shortsword-tanto to go with it….all very east-meets-west."