I have read almost all post here and it seem there're 2 types of people.
1. Give feedback and suggestion out of care that you should choose between ntr and harem and its compatible.
2. Cry, hope, force and try to convince you to stick to harem only and abandon ntr or any sharing. Whatever it avoidable or not.
I think that when dev decides to develop game with their story in mind, they must have applied their fetish on story to love and have a passion on their game. Without it, eventually dev will not be happy with their work, lost interest and abandon their game.
I am dev (not game dev) and this logic apply for me and my work too.
So, I encourage you to stick with what will keep your passion and love enough to keep you working on your work. Don't let other that may have different fetish or interest make you stray, just let them go.
Finally, from what I see your post and opinion, I think I understand you. Because I might have the similar fetish as yours. Harem YES, why not? I can have many girls. Exhibition YES, oh it's good to show beautiful things. Sharing YES, it don't that hurt to share, why so selfish? and Troublemaker; Ntr, I can play it without problem. I don't Love it but don't hate it.
These are fetish and opinion base on; It is game, they are not real; protagonist, girls and other character. I view it as novel, it's their story, not mine. I play it as third person. It doesn't have any impact on real life. This way I can play all games whether their tags and fetish as long as it has good quality; graphic, animation, story, gameplay.
But I agree with people here that Ntr with Harem may not quite compatible. But sharing with harem, I think it can go. Not compatible much but good.
PS 1. Normally I don't post. I just read, play and lets anything goes on (member since 2017 and 2 post). But first, your opinion and liking similar to me. Second, this is overwhelmed, there're too many try to convince or force dev stray. Opinion and feedback are good but forcing; directly or indirectly is not.
PS 2. Sorry if my English is bad, not first language.