Considering that there's millions of other species on this earth and I'm not attracted to any of them. I doubt adding alien species to the mix would change much.
There's only 2 races: White and 'Political Agenda'
2 Genders: Male and 'Political Agenda'
2 Hairstyles for female characters: Long and 'Political Agenda'
2 Sexualities: Straight and 'Political Agenda'