It would be awesome to have a special container designed just to hold keys. It would have like 20 to 100 slots like a key ring (maybe make it look like the guild bank window). I know that even though several of the keys we get will go on our key ring once we use it once, but honestly, after putting in all that hard work for the Vex Thall key, would you really want to destroy it.
Other variations for this is 1) only allow one key pouch per character if it held in upwards of 50 keys or more, 2) have it to where it fit inside another container (like how some of those little key pouches that fit in your pocket in real life).
That would be such a space saver. Thankies in advance,