Well, there are files in the game directory about info on the races and stuff, but it shows nothing to edit, I checked, I personally like creating the perfect race, think of it like the Jem'Hadar on DS9, for the fun of it, that's why I loved MoO2 so much, due to the amount of customization you could do and with certain trainers, I could make the perfect race, I never really played for the points, I just liked to play the game.
You can't change race specific stuff with the live build xml data files. But this stuff is coming with the Race customization in the near future (likely next month).