I hate that the possibility of a complicated story/moral question died on the vine in the first ten minutes of TFA when a smiling Finn gunned down his former child soldier friends.
Having a black stormtrooper who wasn't an ideological Nazi was a mistake. "Actually the Empire are just normal people who are misguided!" No you liberal fucks, they're space Nazis and they're ontologically evil in a straightfoward morality play where good and evil are literally existing magic forces that let you throw rocks with your mind.