Exactly why are you afraid that people will abuse it to powertrade. You can already do that with a zoner Id with 5k and still be able to dock. You might as well add a line that says "cannot trade" , just as you mention "cannot dock 3.6+ in house space" in zoner ID. I don't buy the "we are afraid that people will abuse it" - Comeone, The needs of the many are more important then the casual abuser. Tell me that I'm not talking sense here.