Just wanted to chime in and say that I like the BDSM ideas.
What's missing are, among other things,
symbols like
collars (in the form of "jewelry" or "clothes") and so on and
gags - also with effect, although I imagine that the gagged partner can simply use "passive role-play" (*shudders*, *shivers*, "squeals", *whinces*, *sobs* ... you get the idea
) and limit the verbal role-play to basic muffled sounds as they would be expected from a gagged person (which is what I role-play when I give head and the partner asks a question or expects some reaction).
I think for those of us who love the role-playing aspect in AChat, this would already be an interesting addition without having to invent/add extra positions (which I imagine as the bigger effort). So for these basic BDSM effects you wouldn't even need to create extra new positions but they would introduce one more facet beyond the "cuffed" positions. Of course I wouldn't mind
restraints (that have an effect on the restrained) or whips and so on.
If someone is not into this kind of play, there is always the option to exit the room. And those interested in the scenario will happily play along however restrained they are.
No idea whether this would work, but it seems to work for panties (if we consider "clothing"): it should be possible to remove a gag and put it back on, too.