Many, many, many hats not featured (they are in POH to save bank space, destroyed and need to be claimed from Diango)
I used to collect hats but am thinking of destroying them all/dropping/selling them all for the bank space.
My rules were:
One of each "kind" of hat - meanining for a Partyhat I would only need one, not the entire set.
This means hats must look UNIQUE. Before EOC all full/med helms were just recolors. They have since became unique but I haven't added any to my collection.
My favorite hat that I own is the White Beret.
My favorite hat that I want is a White Partyhat.
I stopped bothering with my collection when I had failed to get any horns from SOF as it means I can never, ever, ever, ever, ever, ever, ever, complete my hat collection.