So this is the official dream/unofficial nightmare.
As it stands people ON OFFICIAL servers can be caught and banned by wildcard via metrics detection.
IF this never gets added to unofficial, they cant use these servers to find holes in the metrics.
(This next problem is no concern to official players.)
BUT official players may invade as many unofficials as they want to deter them from playing unofficial due to meshing still being a thing.
Open discussion.