Mia is the first character I made for the game way back in late 2021 and (i don't know if i should say this but) she'll always be my favorite, I think. But that's partly because I know what's coming, I guess, that's makes her more interesting, as you're right in that for now her character is presented as being fairly straightfoward, for lack of a better term.
...What I can say for Melody, Rosie and Rainn in particular at least is that they each will feature a fair amount, depending on what paths you may go down in some instances.
...My favorite thing from developing this project is seeing what people think, and getting the chance to talk about it too. Thank you!
Wow, I'm so glad that we "resonate", and you make much sense out of the feedback you get.
Yes, Mia is pretty wonderful too. (I was just trying to explain why she was more like only third choice for me... still a lovely character...)
I might like also to add yet a bit about Rosie (and you might find that useful somehow, who knows):
...OK, again, I like her mostly for the looks... (that "fashion model" type of body that I love, rather than exaggerated boobs & asses so overflowing other AVNs, and that Natalie Portman/Keira Knightley face), but IMO the feeling of beauty of a person also involves their "air" or "vibe", i.e. a person with an ugly soul wouldn't seem so beautiful to me, regardless of their shapes... I mean, I'm trying to say that there's nothing wrong (or not that much wrong) in liking someone for their looks...
OK, so... I chose her over Tegan, to pair with in the class (which apparently cut off a large branch of the game and didn't really give score points with Rosie... *semi-humorous sigh* But OK, nothing wrong with developing that relationship later)...
*SPOILERS AHEAD*
And when Ava asked for the advice about the future VP, that was a tough choice, but eventually I chose Rosie. Not sure it was the best choice, but I imagined that (during all those two years that they still have together) Ava could influence Rosie, perhaps even to re-adjust her goals. Ava could start with conversations like telling Rosie that Ava trusts her and gives her what Rosie needed... But requires from Rosie to always equally trust other sisters and give them what they would need. Such conversations might be repeated and happen in the presence of other girls, so that they all would be kinda trained collectively to live as the sorority properly, moving in the right direction (as their common doing, not just the president's business).
Among other things, Rosie would have a year of tight co-habitation as VP, while Ava could request Rosie's opinions and solutions on all matters, effectively teaching her proper values etc. And then, during only 1 year of the actual presidency, Rosie would unlikely mess up too much important things, especially with all the other girls around (who might nudge her in the right direction if she would go astray). So with the right training I think rather than Rosie shifting the system, it's the system that might shift Rosie, to caring about sisters - and perhaps that even might become her primary goal - rather than trying to impress her big sister (/compete /follow in the footsteps /whatnot)...
I hope you get what I mean... And I imagine all the ideas above
(1) might enrich that choice option, beyond just "OK, I might try to ignore my feelings about her",
and (2) might enrich actual future scenes with Ava & Rosie etc.
Of course, if that fits your vision.
Best wishes and thank you very much.
(Yes, I enjoyed the game thoroughly...

)
PS: Eventually I liked that choice/approach because: it would create the less conflict (Rosie would get her desire satisfied, unless she fucks up somehow - but then she would have to blame only herself), and it might be very beneficial for her personal development (maturing experience...).
...Even though there's no guarantee that in the end all these suggested efforts would actually work... PPS: ...Which might create another bit of an interesting collision for the story: how well Ava's efforts would work... (And, related: how MC could help Rosie progress from being a bitch...)
...But I understand that you might not want to expand that branch too much, having already a large and well branched story.