I would be happy to see piercings, and well-done tattoos too

Especially in BDSM and the context of corruption, both have a special meaning and highlights the power imbalance..
You don't see them as often anymore, but I find circular ring piercings on nipples particularly great, especially in the Dom/Sub dynamic
Consent is very important in reality, but somewhat strange in this and similar games. The game is about fiction.
If consent were important in this game, our Queen Bee shouldn't even be trapped in the basement in the first place. The same goes for everything that happens to her there. If she were given the freedom to participate in everything or leave the building from the beginning, she would leave immediately.
Why should it be any different when it comes to piercings and tattoos?