I feel like I have to stress that I'm not coming from a homophobic perspective, before mentioning that, to me, the most glaring aspect missing from the game is development of a relationship with Trix. I can enjoy the MC being involved with males, especially if there's some slow "orientation play" to it and not an immediate transformation of his sexual preference. It works best if the game allows for a m/f relationship to act as a grounding element. Trix is begging to become attracted to MC's "female side" and encourage his transformation, while still appreciating having sex with him on the receiving end (something that draws me away from TF games is the MC being "emasculated" from the start, incapable of satisfying sex as a male, it's the same as fast transformation and I prefer a slow burn).
Trix has the potential to not only help the MC during the psychological challenges of transformation, by making him feel attractive to her from both his masculine and feminine sides. She's mysterious and I can see her being mischievous as well, like having a cuckquean fetish and enjoying seeing him with others. Like Iris from Shattered, she could have a fetish for seeing the MC having sex with guys, and act as an incentive towards that (when I played the game, trying to go for a reluctant transformation, couldn't find a good excuse to accept male advances other than pressure from the "virus"; kept feeling like resisting made sense if the MC weren't a coward, but that it was delaying or even making me miss on the main aspects of the game).
Don't know how far my ruminations are from the current direction of the game... It feels like this is becoming another "accidental girl" type of game where your sex adventures begin only after full genital transformation.