capabilities transmog

Hello administrators arena tournament, I have more request than a proposal, I would like to ask you to allow the transfer of personal items in the accounts, because sometimes someone offers you an exchange item to item, and offer much for you but for others character, today I exchanged Frostfire Shoulders on phoenix bow and could not give it to my second hunter because it has become soulbound, please come up with a solution, my suggestion is to do a thing soulbound after transmog, to 1 set not transmog 10 characters
P.S sory my bad englesh google translate :)