Guessing since it isn't in the code to select racial abilities you can only add or take them away as opposed to giving options?
No, don't think it's possible to make racial abilities selectable. However, I could create multiple versions of each race for character creation and provide different options for racial skills that way. For example, could create 4 different breath types for lizards and have 4 different lizard presets. That'd get very clunky to add them all to the non-origin and origin versions though (red prince would thematically breath fire though, so probably no choice for him).
