Depends on the game for me, if its sandbox gameplay should come first, if its purely VN, Strong dialogue and character writing is important, porn is always secondary
As long as the characters themselves are varied i am fine with their being only a few if it means that they can be fleshed out more, dont like games that introduces like 100 characters but barely do anything with them (also i suck with remembering all the names)
It really does, There are games out there which i have played and completely forgotten about since all of them have the generic models over and over again