There have been a lot of problems on the expert servers recently. Part of this is trolling in general, but there are also people who are just inexperienced with working with good ATC or not knowing certain rules while interacting with other aircraft.
I am proposing an expert zone on the training server in order for pilots to become more familiar with these things. This would probably be the region that TSATC is controlling during the day (according to the schedule). Non-certified users would not be able to control in that area. A pilot in the expert zone would be subject to being ejected from the expert zone. This is similar to a session ghost., but it would not eject the pilot from the server. Instead the pilot would not be visible to TSATC or other non-ejected traffic. A pilot may eject him/herself from the expert zone in order to see another ejected pilot, but cannot reenter expert zone without restarting the flight.
Logsitics such as the consequences of being ejected is up to discussion.