Meh, this doesnt really excite me, tbh.
I'm with Shae, I've always thought "bloodlines" in EVE was more about the culture than the exact genetic lineage. As of now, you can make a vast number of differing skin tones, even for say the Brutor. Someone who's half-Vhekior, half-Civire genetically but grew up in the State, speaks Caldarian (i said it!), supports the occupation of Caldari Prime, and flies slow, boring, missle and shield-fitted ships is a Civire, not half-Vhekior, half-Civire. How you act, what you believe and what you do determines your cultural identity more than your DNA, ESPECIALLY in a world when that DNA is subject for manipulation and change.
Im not sure the huge need for "mix-racing", but apparently a lot of people are excited by the options.