I was wondering why you would change the default that NX is untradeable no matter what and make it so that you can throw it and trade it in person, but not have it also sell-able in shops. Was it intentional or just never bothered to be changed? Would you ever consider making it available in shops? I bet a change like this would spark a brand new and exciting market branch.
I honestly support this feature. I have been on another server and nx items were sold in mushis. This was really convenient as you could even sell ap resets on shops.