Not sure how easy or difficult it would be, but the ability to re-order the currencies (i.e. have nethershards show on top instead of in the middle) would be very nice.

It's easy to do yourself on which ones you want in what order.
Just go to local currency on line 100 and put what you want higher, higher on the list, and what you want lower, lower on the list.

I see this issue is still open. Well, that workaround is a pain in the ass and it would have to be redone everytime updating the addon. Perhaps an option in the configuration menu to sort currencies by name or by expansion (plus ascending/descending) would do the trick.

That would be nice, because I do have to update it every single time there is a new update.