I'm certainly feeling the burn, and had hundreds before TTK. Infusion killed nearly all of them (10 is too damn many for infusion, btw). That said, it's a fairly simple fix, just add Armor and Weapon parts to the list of materials that the Quartermasters sell. By now we should all have enough Legendary Marks and little to spend them on, I'd happily trade a few for the option to buy what I need.