My suggestion would probably be quite limiting... and cause major whining, but... If the race respec becomes a C-Store option, I'd like to see alien players get one for free - if they created their toon using all parts of a species, like - someone made a Cardassian using the Scaled Neck skin, Scaled Length nose, Scaled Spoon forehead, Scaled Length ears. Just as a reward for trying to play a real species.
Or, finally let us buy C-Store items as gifts, so I can go around award people myself. Just to rub in it the bizarre faces of C0M4ND3R L33T and co.