Honest question, to actually have a good reason for a report should ninjalooting happen during an instance, it would be recommended to send something like this prior to starting a dungeon?
''Mandatory Terms of ServiceTM: To avoid issues, do not roll need for items that are clearly not meant for your chosen role, with the exception of Offspec/Transmog items no one in the party needs on, there will be NO ninja looting.
This is mostly for obvious cases, don't need on: shields as a DPS, 2H weapons as a tank, healing power items as a non-healer, etc, etc. Continuing with the instance beyond this point will be treated as a complete agreement to these loot rules.
You may screenshot these messages so that if someone ninjaloots during the instance, you'll hopefully be able to use it for a valid report''
Just trying to avoid issues in the future.
Edit: So this is going a bit off topic so let me specify once again, i'm talking about dungeon loot, not raid loot, as dungeons are not pre-planned like raids, ninjalooters are all over. Also it's for very obvious cases, i'm not gonna get antsy over a dps rolling on a high stamina armor piece or a tank rolling on an armor piece with agility and attack power.
Now; i've seen dps roll on shields because they ''can still equip them so who cares'', tanks or healers rolling on 2h dps weapons for offspec, and fucking casters rolling on 2h weapons just to be an asshole, and i've seen that these people go unpunished because gms will tell you that loot rules need to be established before an instance begins.