Suggestion for Centaur traits:
Take out 'Misogynist', it's kind of funny but not THAT funny, and the bonus is too situational for it to be worth a trait slot.
Replace it with 'Sprinter', +1 movement. Sprinter allows the Centaurs to get a movement of four, at the cost of a valuable trait slot, something other races are able to achieve through mounts. Right now the four-legged Centaurs are slower than anybody else's mounted troops, which is just weird.
I still don't know if I would regularly buy it, but it will probably get used while Misogynist never will. Right now I have been stocking my heavy cavalry with Twitchy, Muscle, and a trait to be named later. Charge, Bloodthirsty, Fast are a couple I have been fooling with.