Unless you can make your own assets which is very hard so mostly devs stuck with what's available. They can hire someone to make but cost will go skyrocket even those high number of followers
Censorship is a no but I can understand censored Japanese released because there is no way to it. Regarding no sexual content I'm good if dev can make an exceptional story
No, as I see the protagonist as how the author wants to portray the protagonist. I dont care about the morals, protagonist can be asshole as much as he/she want as long it goes well to the story.
Eternum is 10x way better than Ready player one. Eternum world is diverse and feels more alive while Ready Player One is just some Fortnite kid wet dreams.
Threesome is so awkward specially MMF and when it's FFM rarely you can find female that would hook up with another female it will just end up you fucking the girl then next the other girl. Probably you can do it when you are drunk or in drugs. Threesome is only good when you think about it or...
Incest is only interesting if it's a fantasy or someone doing it, when it's real and you are the one doing it the appeal vanish and you'll find it disgusting.
There's a lot of them though you can avoid milf cause I usually play single path and avoid harem unless it's unavoidable. I think only few ones are unavoidable and it's the bad ones which is kinetic and anyone is force on you.