Well, I don't want to push you into any direction, but you definitly should make sure, you know in which direction you story shall go and which content it contains. That includes fetishes and their avoidability or skippability. Don't try to please everyone and don't expect everyone will like it. That being said, should you try to please a larger crowd by adding content, that my oppose each other, give the player a choice to AVOID it. This means, the player and the MC can stop the situation from happening. Skipping or hiding wouldn't cut it, because it just jumps over the scene, the player doesn't necessarily see it, but it still happens. That's something many players just don't like, because it's just a half hearted attempt in that moment. Best example I got, there is another male interested in one of the LIs of the player/MC and he is flirting with the LI. You can then give the player the option to let it happen, so that the other male gets closer to the LI and maybe even ends up with her (netorare or sharing content). At the same time you can give the player an option to step in and stop the advancement of the other male (not interested in sharing or netorare, but in harem content). In this case, the LI is just there for the MC/player and other males will never be close to her. You could even differentiate and give one option for harem, one for netorare and one for sharing content. But beware, more options always also mean more different paths and scenes, that means more work for you.
Lastly, don't produce content, you're not a fan of or feel uncomfortable. You probably won't be able to produce something, that people of that fetish would like to see, it would be a half hearted attempt. In the end it would be wasted time, you could've spent on the main story or other things.
