These ideas are pretty neat! I'd say the implant might present a problem because some players will see it as being dubconned or non-conned into participation no matter what. Most people will probably be okay with it but IME it's better to let players decide how they make their characters become comfortable or not with the setting and smut requirements.
I'd also say to focus as much on worldbuilding the setting as the smut ideas. If you just create a boring sandbox that allows people to play out hentai tropes it will fail quickly once everyone's exhausted the kinks they joined to play out. The setting itself also needs to be interesting and provide a reason for people to play in the game vs just posting on a bakerstreet smut meme.
Re: Previous suggestions
These ideas are pretty neat! I'd say the implant might present a problem because some players will see it as being dubconned or non-conned into participation no matter what. Most people will probably be okay with it but IME it's better to let players decide how they make their characters become comfortable or not with the setting and smut requirements.
I'd also say to focus as much on worldbuilding the setting as the smut ideas. If you just create a boring sandbox that allows people to play out hentai tropes it will fail quickly once everyone's exhausted the kinks they joined to play out. The setting itself also needs to be interesting and provide a reason for people to play in the game vs just posting on a bakerstreet smut meme.