If you could only play as a dude i wouldn't even play the game, it would be just another generic male protag game for me, i'm here mostly for Lena content and some Minerva on Ian side.
I bet i'm not the only one here that thinks in similiar fashion, so no, i think it would not be better at all.
Your oversimplification of female protagonists comes from trashy porn games, wich GGGB is not.
You could do the same "romance stuff" in GGGB, get a job, become a star and just settle with 1 dude/girl or cheat on them with multiple partners, i liked it, and i like this game the way it is now.