Well, I don't want to get into too much of this sort of a discussion, especially considering this forum doesn't really put much stock into PT retcons, but bear in mind that Fett was originally played by Jeremy Bulloch, a full-fledged white man.

But as to saying that because there wasn't much diversity, I disagree. Lando's a very interesting character IMHO. James Earl Jones provided the most iconic voice to the most iconic bad guy (post-sexy hot tamale olympian demigod) in all movie history.