I don't know what exactly do you mean here. But if you mean like starting as a girl which is instead turned into a male, that is actually something which I'd quite like to see. These kind of TF games are very, very often with a male who is turned into a female. I'm ok with this, but I noticed that sadly instead the inverse in these kind of games is almost unheard of, despite all the potential that also this kind of situation would present, both for just smut and sex and fetish, and also for more serious stories in games in which the game developers aren't using just an excuse plot but are writing a real plot with a fleshed out MC and other characters. In any case, indeed, to now change suddenly and add such option would require quite a lot of work and it would be absurd to expect it to be added in this game at this point, almost impossible. Besides I don't think the developer would be interested anyway. But still I'd like one day to see such a game, possibly one with also a very good plot.
Anyway, another thing, now related to this game, even if, again, I'm not really sure it could be added since this also would require quite a lot of work to be added at this point, but a feature I'd like to see added in future on this game would be for characters, included the MC, both before and after the transformation, to have a definite sexual orientation instead to see every guy as straight and every girl as essentialy bi. I'd like to see situations in which, according to the characters' sexuality, the scenes play in different ways according to the respective orientations of the characters. And so maybe to see refusal of relationship after a character reveal to not like you in that way because they are gay, lesbian or also straight in case it's the MC trying to woo a girl which is revelead to only like men. Or also cases in which when the MC is trying to pair their friends, it's then revelead that they don't like the partner choosen and so they now have to choose differently with a restricted choice pool. Or also maybe the kind of people with which your boyfriend could cheat on you. So not only girls but also other guys if he's bisexual. But again, I'm not really expecting to see this, for all the things it would requires to be added like the fact that it should require a lot of new scenes or changing current scenes, and even to add a parameter that makes straight guys and straight girls more probable to spawn, more or less at 90% each (with maybe an option to change this if so preferred).
Instead, more probable things I'd like to see in future, is for future updates to add the possibility to buy also shoes, so high heels, ballet shoes and so on, as clothing option. All of them with their stats. Then another thing would be for accessories also, which I'd really like to be seen. So things like bracelets, purses, necklaces, hats, gloves, glasses and so on, of course them also with their stats. Regarding the last, maybe also a trait for characters who use glasses to see so that it's then required to add them to the outfit if the MC has this trait. Another thing would be something like new personalities. I'd really like for example to see a goth option. And finally I'd really like that it'd be added also different kind of heights for the characters. For example for the MC and females something like very short, short, medium-short, medium-tall and tall and for males instead something like short, medium-short, medium-tall, tall and very tall. With also different kind of preferences for the characters like there are for breasts, so for example traits like, prefers people of the same height, shorter than them or taller than them.