It would definitely be nice if they stacked to more than five. It would also be good if they give guild status. I transferred some via shared back to a character in my alt guild (character: Gilden, server: Thurgadin) and consumed a few. Guild received no status/xp.
1. Glad they are giving us a replacement for the old bounties that are no trade and giving us an heirloom token to pass to my alts. But... 2.These really need to be stacked in greater quantities than 5.