I don't think anything like that needs to be done. My chief complaint is that there is a clear heterosexual bent to romantic scenes, with the Traveller always behaving as the opposite sex character. This can be fixed by editing certain paragraphs per route by gender.
For example, there is a scene with Ayame where she shows off her cleavage, much to the Traveller's delight. Instead, maybe a female Traveller can catch Ayame taking in her figure instead and and being cheeky about it as the Traveller blushes. Or in Cal's first spicy scene, maybe have him struggle to carry a male Traveller on account of the fact that he's trying to carry a fully grown man to bed and despite being a big guy, he doesn't have June's strength.
Just my thoughts.