I like the Idea alot. Synergy is avoided in alot of ways because fewell is annoying and paying the NPC for reloaded Fewell is to expensive. Since synergy will be playing a larger roll for old Item's and hopefully newer gear as well, after the next major update.

It would be nice to see the Synergy npc either charge alot less to reload your fewell stock or give us another source of fewell which Geodes, that I actually just drop to the ground now, would do nicely for. You would find Geodes back on the AH with a slight increase in price also since they would have a new function, which would help gold smithers a bit since folks are getting closer and closer to tossing them as they drop into inventory.