Currency Exchange Interface
This is for currency exchange interfaces. This is for editing the name of currencies in previews such as the below example for Gems.
You can find this in Interfaces/ingame.stf
This is what the list of values looks like. Editing the "Reputation #" of any of these can make it appear as whatever you'd like. For example,
"6622 "Requisite Honor: %d"" instead of "Requisite Reputaion 22: %d"
This will now show as requiring the currency "Honor" in-game.
There are plenty unused currencies in-game.