With all the different currencies in the game, it would be nice to first of all get them out of my regular bags, and secondly, get them in a place where I can see them all. I would like to suggest that another bag be added, like the pet/mount bag, where only currencies can be placed in there. I am thinking primarily of Momentoes, Phirous Shells, Energies of Justice, Proofs of Myth, and Phirous Coins. We could even go so far as to add in the fragments from the treasure hunter game, goblin badges from the goblin minigame, and ghost cards from Malatina's Dungeon, but it could be argued that those are not currency. As it is, this game keeps adding more and more different currencies, and the space they take, plus being able to track them is getting problematic. A currency bag with ten or so spaces would be a way to alleviate this issue.
Lemon
I was just thinking about this topic this morning, I have all 6 of my bags full including my item shop bag, and half of that crap would be listed as a currency in any other game ie. Mem's, Shells, etc. Also they could turn transport runes and those type of things into being like the arcane transmutor charges. I'm always afraid that I'm going to accidentally delete a stack of transport runes, portal runes, megas etc. I'm not even sure why I'm bothering bitching about this, they seem to ignore every suggestion made on this forum.