Why can't we put these items in guild banks?
Seriously, why?
I have a guild with my friends who are just starting the game so we use the guild bank to stash motifs and recipes and stuff for them to sell to get started in game. They love treasure maps so I keep those aside for them, too. But instead of being able to stash them with everything else for them to grab when they want, I have to mail each one.
Don't tell me people are actually exploiting these for green gear somehow are they? Most people I know destroy treasure maps....