The definition of "optional" is unclear.

Currently, the categories of items are...
  • Veteran rewards, seasonal events or mogstation (goes into Armoire).
  • Purchasable from Calamity Salvager (quest rewards, can't go into Armoire).
  • Items you can get again (craftable gear, tomestone gear and duty loot).
But most of that could be described as optional. So do they just simply mean all gear and that the Glamour Dresser is almost pointless beside storing dye information, or what?