Oh right, speaking of clowns, in case this hasn't been recommended already, when Franziska lets you pick a weapon, make sure you get the pickaxe. Minecraft-stunning your Dominas is too good to pass on. If you wish to go back, you can save edit yourself a bloody pickaxe (if you feel guilty, remove whatever weapon you went for from your inventory).
Llavanya could also use more scenes where she isn't brutalized to make LoveHurts less sad but I'm not going to suggest things while things are brewing already. She's technically the only temporarily playable female character and then... Mary, you will pay for this. You did not give us the chance to be Llavanya and try to resist and you will pay!
(Not yet calling Boda vibes here as long as Dekarous has been giving status updates and doesn't have huge, unimplementable stuff in mind. Or he could do what Tearycian did with Katalist - prerelease with bugs unfixed so people get to test the content - since it's already been confirmed the new release would break saves iirc, but even so, your mileage may vary.)
Katrina's gas chamber had some untapped potential (if you missed out on it, you can replay it, though it will cause your screen to freeze tints) that seems to have been addressed for players into anal perfume. I don't know about other players but I always end up spending most of my yarare playthroughs against the first boss and grinding all the alt dialogues and scenes then go "shit, there are others". It's also unfortunate that you have to tweak to replay the soul shard gift full scenes, though it was very nice of Shakie to share some of the commissioned art publicly on her DA.Playtime varies A LOT depending on how you actually play yarare (get raped and enjoy it) games. If you focus a lot on dialogue, you may very well spend 5 hours on Katrina (first Domina) alone. If you breeze through the content, I'd say 10+ still, as Mary can be quite challenging unless you cheat.