“4. The 80/20 rule. With Rogue One butting right up against A New Hope, there was a need to make sure the two halves of the original saga blended together seamlessly. “We knew that 80% of the film would need to rely on the classic designs,” Chiang said, “but that gave us 20% to play with.”
According to Chiang, they wanted to start big and the challenge was to make that 80% of their designs feel as though George Lucas had created them and built them and simply didn’t use them. The other 20% would come from blending the prequel designs with a more handcrafted look.
To design the U-wing (which went through 781 different drawings!), Chiang took Gareth Edwards up to the Lucasfilm archives to show him some of the designs they’d come up with for previous films. Edwards gravitated toward the looks based on an F1 Hydroplane, which shared design elements with Count Dooku’s solar sailer and Zam Wesell’s ship, helping bridge the looks between the dark times.”
Read the whole article at StarWars.com.