I know all the PvP Wings , Cloths and other accessories aren't tradable.
Yeah they were tradable but only for 24 hours when they were released but just like PvE all PvP Accessories should also be tradable.If that can't happen then just like Some PvP Mounts are tradable for 1 month could happen, It will be same but it should be tradable. Just my Opinion , I respect someone else opinion on this.
Thanks
Sanidhya