There is an abundance of not good addons and items that survivors don't use because it doesn't fit their play style. How about implementing a trading system where you can trade items and addons for ones of higher tier items or addons. An example being trading 3 green flashlights for 1 purple, 15 clean rags for 1 brand new…
Why not add a trading system in the game, like a daily deal in the shop "3 brown medkits for a yellow one." sort of thing. It would be multiple of one type of item that can be traded for another item or the same one but a higher tier. It would help for the items that aren't used by some like a brown toolboxes or green keys.
Who agrees with me when i say that all characters should be able to have the crown cosmetic, not just the original ones.