Hello Saviors,
First off I want to say that I think the current headgears look great and I love that you can have 3 pieces of gear. I also love how they can be enchanted with special stats.
I am making this thread for players who want to suggest new headgears they would like to see in the game.
I suggest:
Sakkat
Sunglasses
Cigar
Pipe
Monocle
Baseball cap
Headband
Bandana
Soccer ball head
Large goat horns (the current goat horns are a bit small)
Thank you! 
-J
Santa beard and hat~
I would like to suggest:
Witch hat
Corsair hat
Bonnets
Snow cap
Earmuffs
Headphones
Grass / Leaf in mouth
Ninja mask / flu mask
Coo coo glasses
Red sunglasses
Doctors hat
A moving headgears would be nice too like the ones in RO. 
Animated ones! Like the angel / devil wings in RO that moves, kitty and bunny ears would be nice if it moves too!
And also would like;
Decorative Golden Bell
Blush
Elven Ears
Note Headphones
Twin Ribbons
Pair of Red Ribbons
(All from RO, my favorites!) 