A few months ago, I created a question about what adult entertainment would look like in the future. I deleted it quite quickly afterwards because people were concerned anti-porn filters would view it as offensive and we risked blocking the entire network.
I asked a question about this on this meta (should we add a NSFW tag?, where the question I created is also mentioned) and on the network-wide meta (What is the network policy on questions involving adult themes?, which also mentions the question I deleted). On this meta, I asked the wrong question (we shouldn't use a tag for such a thing), but on the network meta, there appeared to be somewhat of a consensus that self-imposed censorship is not the way to go to avoid external censorship, and that invidiual sites should determine their own policy.
So the Network Meta says that we should determine our own policy on adult topics. Could we come to a consensus in this meta questions? To what extent do we allow them, if at all? What ground rules should we have for such questions?
Please note that we already have some topics that could be considered adult aspects of worldbuilding, like inbreeding, interspecies sexuality, genital transplants, centaur breastfeeding and possibly other ones as well.