Exactly. I didn't like "dump stats" and C&C fixed that by giving every attribute a reason to be important, and to make and having Primes important. Humans having that third Prime is very significant. When my players pick their demi humans to play, and they often do, they definitely give up something significant to have all those racial advantages.
Yes, Charisma being the save to resist death magic was a really cool innovation.
It also, very nicely, pulls the adventuring party towards being a bunch of humans (not that demi-humans are not viable but that three Primes is really, really nice). This is an elegant solution to the exotic races problem that can plague 3.X D&D.