If the pre-90 mats still don't bind when traded via Shared Storage then you should still be able to farm mats on alts for Element Stones and leveling up Crafting Proficiency up to 390, which is enough to craft end game gear. Having said that, forcing players to farm all of their own mats with the 5 departure cap plus Fatigue is dumb. This also kills crafting commissions. Unless the craftsman happens to have a hoard of materials you'd need one who's willing to farm and factor in that cost, otherwise you will have to learn crafting yourself.