From this thread:
Quote Originally Posted by Arutan View Post
...I think we get too many currencies. Alexander alone represent 35 different currencies (Head/Chest/Gloves/Belt/Pant/Accessories x3 + weapon x2 all normal mode, 12 different tome for the 12 savage floors), then we have the 7 primals which make a total of 42 doing end game content, add to this mhach matter and demi-matter, coin x3, proto-ultima thingy, diadem tokens gatherer/war, PotD's tokens, tribe, micro-memo.... here we have a total of 57 currencies in Heavensward alone and I probably forgot some. Don't they realize how insane it is?
Some currencies have sense because requiring you do a specific content (as example, the potd one), but that Alexander ones are a bloating.

I'll vouche for have only three currencies besides the tomestones and do-this-content-alone: one for casual, one for hard content, and one for savage content.

Just deal with rewards and item prices to keep them balanced.