What if we made an item that allows lv1 auto vend for any class?
That way we can auto vend 1 account switch to the other to endow, link, bless/agi whatever the buff you want may be without breaking the no dual clienting rule and you still wouldn't be able to leech your own chars due to the moving that is required in party to get exp.
Although I would like a yes/no from GMs, players saying ways this could be abused or be used to cause mischief would be nice.