like you said, that would fuck up the early game, especially if you're on harder difficulty.What if the gain/loss was dependent on the quality of the scenes shot? Actress shoots great scenes with black dudes, likeness goes up. Shoots terrible scenes with redheads, likeness goes down. The problem I see with this approach is the terrible quality scenes you shoot at the beginning might lock out some actresses from shooting anything because their likeness will go down after every shoot. Might be realistic though, if everything you shoot is terrible you might want to leave the business.
it shouldnt drop. maybe in extreme situations when chicks have some combo of traits you really dislike + some random roll.