I really wish we'd seen some Japanese people in the SW films. I mean, GL wanted to cast Toshiro Mifune as Obi-Wan!
And his early idea circa 1975 for having Han Solo be black was clearly what led to the creation of Lando in ESB.
Shame the casting of Japanese actors didn't happen--I guess the production crew on ROTJ was too busy making alien masks to bother putting human faces before the camera.