Guild Wars 2

You don’t always have access to your bank

I think an additional inventory bag would be handy.
Specifically a bag is interaccount. If you put something inside that specific bag, it will directly also exist on all other characters you have with that bag.

I think it would be really handy for things as infinite cat potions or similar. Soul bound items could be allowed in the bag, but should still not work to be used as normal of course.