Just to add, it's interesting that Star Trek was both post-racial and extremely racist at the same time. Yes, the humans didn't even notice they were different colors or genders. But every Klingon's a warrior, every Vulcan's a scientist or diplomat, ever Ferengi is a greedy weasel, etc. And sometimes the plot would center around the struggles of a character who didn't fit their racial stereotype.
It would be nice if they would make a new Star Trek series about exploration, discovery, science fiction, etc. By all means give us a post-racialism, post-feminist crew of diverse characters who don't even notice they're diverse. My fear is it's going to be Star Trek: Diversity Wars and the science fiction will be glossed over and every episode will be about how the strong independent wymynz what don't need no man character struggles against the institutionalized discrimination against strong independent wymynz what don't need no man etc etc.