I think this one could be, to a certain extent, considered as one:
#lounge (which doesn’t exist anymore by default in new Discourse installation) was/is also a proper category for this, with more relaxed and casual conversations, but reserved to trust level 3.
There are few TL3 on meta if we remove the staff.
I think it was discussed at some point to decrease the TL3 thresholds on meta…
Same here
It’s also a good context to disagree more easily with people if we’re shy.
Like, saying, “I don’t like the TV show you recommended” instead of “I don’t like the design you created”