The assistant is a npc spawned in the world and lets a player obtain heirlooms, glyphs, gems, utilities like faction change and race change. The player can also spend gold in order to increase their profession skills. It will be set to the current max value each time the feature is used. They can even unlock flight paths!
All items obtained from the Assistant are free to purchase, however users can easily add a cost by modifying the values of the item template table.
All the features listed above are enabled, or disabled, through the configuration - allowing a user to only use the features they want.