I’d like to design an eroge based on 70s-era shoujo manga and anime, the kind with impossibly sparkly eyes and whispy bodies and extreme melodrama. The sad(?) fact is, that computers simply were not advanced enough in the 70s to pull this off, so we must make up for lost time
The plot would be of that time period, and rather than the stereotypes we get today with the loli, the tsundere, the loli tsundere, and all that, it would incorporate common character types of 70s shoujo as well.
And the sex would involve rose petals flying everywhere and symbolic lightning.