But you should really increase the rewards… and by a lot… like 1000 fold.
First time I completed AC Explorable (Ghost Eater) I got my 30 tokens and went to see the vendor. All the weapons cost around 300 tokens, and are lvl 60. I go check the armor, a level 35 explorable dungeon gives lvl 30 armor peices and even the lvl 35 peices were worse then things I could craft or buy off the trading post. Only reason I see to collect tokens is for the rare crafting materials.
look at the second tab, there you get lvl 60 items for AC. 70 for CM and 80 for every thing else, and the sets are mostly for the looks.