We all know that six and sixuality was neither prominent nor hidden in Daggerfall. There was a prosttute's guild, leather and chains callgirls in the taverns, and a brothel here and there. Witches covens generally included nudity, the King of Worms keeps dancing girls, the Queen of Sentinel has her group of nearly nvde male servants, and the temples appropriately had nvde people all over the place.
And yet, nobody played the game because they just really wanted to see pixelated boobs. The stuff was there, but it was treated as the normal state of affairs because those are the things you'd expect to find. It was an advlt approach to the world without making it a gimmick like the strange six scene collection in the Witcher.
Contrast that to Morrowind and Oblivion. Dark elves in lore were supposed to be permanently horny, and all they really had in Morrowind was the House of Nirnly Delights (can they say Earthly Delights?). Not that they need to offer you a handie under the table, but they don't need to treat six like it doesn't exist, which was accentuated by the lack of children in those two games. In Oblivion we get the weird Anvil gals who have an easily spotted scheme. It's about as kid-gloved as they can get.
Can we have children characters and six indications back in the game? (and hopefully in separate places) I don't think the player needs to have any sixual encounters or children themselves, but the world always seems more fleshed out with those factors included. Just treat them reasonably, and definitely don't overdo them.