Quote Originally Posted by Raikai View Post
a) Boss drops token X.

b) You need 10 token X to purchase Y

c) You need Y + 10 Z (purchased with 1000 Tomestones) to get your weapon.

Step b) feels completely unecessary and even confusing for new players, since you need to keep going back and forth 3 different vendors to figure out what you need.
In addition to Rongway's reply, the other reason is that trading the tomestones in for tokens permits you to exceed the cap. For example, weapons require 10 tokens, each of which costs 100 tomestones (so 1000 total, though 500 in EW). However, they also require a raid drop. If you're generating a bunch of tomestones before you have access to (or luck with getting) those raid drops, the token exchange permits you to "store" more than 2000 tomestones, though at the cost of an inventory slot and those tomestones being "committed" to a particular use (exchanging for that gear tier).

To be perfectly honest, I'd be fine with most of the existing currencies either having their cap removed, or having it increased by at least tenfold.