My idea is simple; just make a npc crafter in Droknor/Consulate Dock/ Kaeneng (wherever they sell max armors) so he can charge 2k to convert your zero AL festival hat into a usable max AL headgear for your respective class.
This has several advantages: 1) graphic designs went into making these hats aren't wasted, and 2) given that GW has no other race except humans, playing with dragon mask/snowman mask does add more different looks, and 3) it gives us a pretty good reason to collect and keep these hats. Disadvantage? I really can't think of any other than giving Anet's staff a little more work.
Of course this isn't a high-priority request, but I hope Anet can consider to have this feature added.
H

This would change that though!
Of course, I'll still like the hats, even if they never get any armor.

