Allow transfer of subscription sets in the game from Rev 1 to Rev 2 or viceversa. I'm sure a good number of Rev1 players have subscription sets they may have unused on Rev1 and are interested to use them for Rev2. This would be a kind gesture for those who've completed the game in Rev1 and have no more use for their sub sets over there. Also, there's the possibility that someone will have bought a sub set for the wrong server, and this transfer option within the user's account would resolve that. Probably can carry this process out in the website while the in-game subsets are in the selected character's inventory before the transfer happens.