@caohuak
I don't think it wouldn't work from a technical standpoint, but from a social one. The simple fact of the matter is that people overall are lazy fucks. This includes me. If circles were to be introduced, I would expect people to use the public one most of the time because most posts on here are short and have very little to say. It would take more time to organize your circles and setting the right ones than the post itself.
Hell, we did have groups on fedi via Guppe and I can count the number of times I've seen someone use them on one hand. I could also theoretically handle groups via my NodeBB instance. It wouldn't even be difficult, but it's still too much effort.
What we'd need to do instead is moving the focus to communities so that you essentially post into them instead of into your profile (i.e. the global space). It would be like mandatory circles, but it wouldn't feel like an annoying forced choice because the application would make them a more natural part of the workflow.
@digitalfox @Elrick_Winter
