Combining eridium

It would be nice to have a single eridium amount per account. It would make unlocking skins and cosmetics easier for your new characters. Let us farm Earl’s machine for annoited purples much easier there has been plenty of times I had to pass on good purple launchers with my zane, because he is my
newest and has the least amount of eridium. Or even allow us to store eridium in the bank?