They
are basically better-than-thou humans. They're not really
interested in being a ruling-class type thing, if the racial talent fluff is anything to go by, but they're apparently good at it. They're also probably inbred to a certain degree, but that doesn't necessarily have negative consequences for them (magic!). It probably would for the cornac humans. ... and of course, highers are still
human, if with some odd quirks, with all that entails, and not the Thalore. That means they've probably screwed up something or other in the past, or are currently screwing up something or other in the present, or at least have a few of their members doing stuff-you-should-get-killed-for. That's true for everyone
except,
maybe the Thalore. They just want to be left alone
The innate magical nature thing probably isn't a good thing in T4, though. About the only power sources that don't potentially entail something nasty is stamina and,
maybe, the celestial magics. Mana-casters have already come close to breaking the world, once, the equilibrium users are apparently all batshit insane (we have seen
no particularly stable EQ users in fluff
), vim users are basically feeding off what the mana-users' world-crack attempt unleashed (oh, and blood/death/life force, and not in a good way), the afflicted are
powered by hate, paradox users are, well, screwing with time (and time screws back, hard), and psi-users have enabled the Way.
There's an end-game option for Yeeks, who are currently the only race actually part of the Way, that you can play, to forcibly convert the entire flipping planet to the Way. Basically brainwashing/enslaving the entire world. Sure, the Way's one of the more benign factions in the game, but...
The celestials seem like they might be alright. They're basically solar powered, heh. Celestial power is still arcane power, though, which probably means they either had a hand in the world-shatter attempt or potentially could. Nasty stuff. Well, that, and they've got all of one actually-benign talent tree. The rest of them are about killing people