Well, people already said to you what the most important thing is. That you create the game you want. And Im 100% for it, even if its a game not for me.
I get what you mean that you need some imput, but from here you will get into more problems since every one will have their own opinion which controdicts the others ones.
Fact is, you cant satisfy everyone and that you have to keep in your mind.
People who like NTR wont like a Strong MC with a backbone. People who like Harem wont accept a single sex scene without him. People who like Vanilla wont accept Rape etc etc.
It seems you dont really know where you want to go, which is kinda a bummer since people start to gather and if you dont make it clear where this game is going you will just get more criticism which will then end in a hate/flame war once again.
BlindBigot gave a interesting option where every LI is dedicated to a specific fetish. If lets see people like me who dont like NTR (and with NTR I mean I dont want to see any LI to get banged by another guy) and if we could have the option to turn it off, then some problems could be avoided. But if you want to have this scene in your game which I support, you should just make it clear what the game is all about and what to expect. Its just not a game for me then. No hard feelings.