>>407817260
Any solution that solves the "rando problem" also stagnates the community and makes it more difficult for newfags to join. 
Literally everyone has done it wrong since I stopped being the primary anchor. Instead of putting up barriers to entry, just talk to new people to figure out where they're actually from. Certain individuals want to anchor and want to "solve the rando problem" while also not talking to anyone else aside from the 5 people they circlejerk with every night.
Group only instances will cause a lot more problems than they will solve and most importantly they will stagnate the community even more.