Well, vanilla is boring, that's for sure
I assume most people who play these types of games are not looking for a strictly vanilla experience, but to immerse themselves and explore some fantasy they either don't want to or can't have IRL. At least that's the case for me, I'd say.
In my personal opinion, more kinky = more better. It doesn't really matter what the specific fetishes are, or how far they go, in terms of a love/romance path it's just important that it's consensual, mutually beneficial and fulfilling. Some boundaries may be pushed, people can be hesitant at first, but at the end of the day, it should only serve to strengthen their relationship. Ofc there needs to be a certain level of respect.
TLDR; you do you, just make it spicy