What can a GMC use for crafting after getting to GMC? An ultimate suit.
One set of suit that covers all construction skills.
I propose a new set of formulas,available from quest or npc to buy (maybe for a good amount of imperial tokens). Those forms, for example GMC cloth/padded tunic, would be attuned after trade/reward and would create attuned items. They would require craft rating 234. They would also have unusual number of tech slots and would only accept crafting techs, stat techs and dye kits/dyes. the unusual number could be 5 or 6 to cover all construction skills+stat tech. some pieces don't accept specific techs but they should still be able to be filled.