I try to only include stuff I am motivated to create, so my preferences will be reflected in the content. Trans sex and Bi Male sex are just not my sexual preferences.
Hmm... I kind of thought that was where the half elf at the card game was going. I'm not bi, but I did think that would be a good addition. On the other hand, I couldn't write gay porn. I just don't bend that way. Maybe this game will inspire someone with those kind of tastes.