I would die to see a VN just like GGGB, but with the genders swapped. Playing as a guy and being seduced by your gf's mom, being blackmailed into fucking thug latinas, being corrupted by debauchery or making a professional career with a loving woman, falling for the tricks of experienced women, seducing inexperienced ones, exploring sex with transgender women, gay sex, and so on.
So yeah basically the course of GGGB but with reversed genders and a few changes in the story. I know it's most unlikely to ever happen because this game alone is already a huge project and took a tremendous amount of time and effort to be done but hey, a guy can dream.