Protag from Photo Hunt gets to me with how fucking short he is. Games where the MC is shorter than the LIs tend to be shota-coded but this guy's supposed to be at least 18
The art styles turn me off from those. Single Again characters look like Bratz dolls and the daughters look OK in Light of my Life but everyone else looks like the Wicked Witch of the West
Don't think it's about time so much as about building up the taboo, like it should feel like crossing a huge line or it's just vanilla porn with the names changed
Art assets is unfortunately a big one, it's why so many games are set in the same generic medieval fantasy universe. It would probably need to be fantasy or sci-fi rather than real world
I don't think that incestuous relationships are universally morally wrong, necessarily, just that it's harder to separate informed consent from grooming in such cases
A colonial setting would be cool, there's lots of raceplay-adjacent settings where "barbarian orcs rape civilised human/elf women" but not a lot of the reverse where white-coded men curbstomp the primitive men with their superior technology and have their way with their women
The problem with separating consensual and non-consensual incest is that there's no clear line. An elder brother can groom his sister just as easily as a father with his daughter, and it doesn't make sense to talk about consent in that context
I remember in Jade Empire (back when Bioware could actually write a decent world) it was possible to romance both female LIs, but only if you passed progressively harder Persuasion checks whenever they demanded you choose between them