I don't think the legit players should hold as much responsibility in this as you are trying to make them.
Legit players should be the people you are looking to assist in these matters, not reprimand them for forgetting to screenshot a deal, or being unable to because it was an AH purchase (which, again, are anonymous).
The way these duping waves are being handled is consistently unacceptable.
EDIT: Also, to give us steps to protect ourselves, but then also clearly state that nobody is getting compensation shows that even if we do follow your warnings to protect ourselves, you'll still find ways to make it OUR fault.
