Oh yeah, that's a good idea. I haven't gotten into crafting in Heavensward like I did in ARR, so I forgot that. Thanks.
To Snugglebutt, the cap is 220.
To Tehol, honestly... it's a real shame, but there are still no special endgame items from Desynthesis in Heavensward except for Glass Fibers from Void Ark gear. And even then, the primary method of getting Glass Fibers is through Moogle dailies, though Desynthesis is the only way to get HQ Glass Fiber.