Sex scenes with your party members, and NPCs too. Choose to have sex with defeated enemies instead of kill them.
More species (as party members, NPCs, or at least as enemies): felines, hyenas, dragons, horses, avians, otters, skunks, raccoons, more canines than just wolves
Male party characters, with male breast growth, hyper replaced by futa
Combining routes, or allow an additional route after one is maxed