Now that you mention tails I wonder what sort of customization the Au Ra will have? I can assume at least a length slider I hope. Since they mentioned succubus-like females I wonder if there will be a sort of spade pointed tail tip.

On the subject of multicolored irises again, my real eyes naturally change color (chameleon, it's called) based on my clothing and mood. There was a phase in highschool in which my eyes were tricolor- the inner being green the outer being blue bit with a sort of golden brown sunburst from the pupil overlapping. So multicolor eyes are possible IRL, though likely not in the same combinations we can create with the Au Ra.