Plenty of NTR games, why don't you hang around there? Why don't you steal the premise yourself, and make your own NTR size me up?
I'm already playing a lot of those and why don't you make your own fully-vanilla size-me-up clone. Are you gonna trust the dev to make the game fully vanilla for you?
Don't know if you noticed, but this game doesn't really give you the option to view scenes that happen between the other characters in the game. You click on a room, you're treated to a cutscene. Even if NTR was optional, for a lot of people it's not even an option to consider.
Which is why you could have a choice at the start of the game or before a scene to disable them.
Simply seeing the option to select is annoying and bloats the UI
Any update added to a game will 'bloat' the UI. 'Bloat' here being the things that don't appeal to you personally.
as well as implies that NTR is happening, forcing those players into an NTR position, unless they're given the option to remove it from the beginning. The scene between what's her name and the shopkeeper has already been adjusted apparently, because before it didn't give you the option to leave before the scene takes place, but it's still heavily implied to have happened which a lot of people weren't happy about.
If I think I understand what you're trying to say here, it's that even if the NTR hasn't entered your field of vision or even happened in your version of the story, it being optional implies that the characters are capable of cheating on you, which makes it less fun to flirt and have vanilla sex with them.
I can understand where you're coming from with this, but the game doesn't need to cater 100% to you and if even having optional NTR elements in the code that you're never going to see because you turned it off, is enough to make you upset, then maybe you need to change priorities and stop being so eternally butthurt over pornography.
I'm not asking that the game 100% cater to me and only me; you are.
There isn't a way to include NTR that wouldn't raise the workload on the dev, because they're either ignoring one community in favor of the other in updates, or trying to balance a development cycle that would likely be a 2:1 ratio of 2 parts normal scenes (1 part that covers the base update and 1 part to equalize the NTR content) and 1 part NTR scenes which would raise the workload substantially for an already niche group of people.
First of all, NTR is not that niche.
Second, any game on here is going to have stuff that doesn't appeal to you only. Appealing to "muh dev workload" implies that the game was originally only going to be for you and that outside forces are coming in to 'pressure' her into ruining the game for you.
Have you ever considered that maybe Klein added the futa scene because she wanted it in there? What if she actually wants to add more NTR-adjacent stuff into the game, but instead feels pressured from your side to not do so as she might receive hate or criticism?
It's already heavily argued that devs should either do one or the other (no NTR or NTR) because the dev will never be able to make both parties happy.
That is probably true, which is why I propose to make it optional. If that's enough to make you stop caring about this game, then maybe this website isn't for you. For everyone that loses interest in this for the addition, there are probably going to be as many people who will gain a renewed interest in the project.
I'm going to play and enjoy this regardless.