I have to agree. This is an EXCELLENT idea, on multiple platforms. Good for economy, good for curing boredom, good for making crafting and more mundane tasks a little more exciting, good way to pull people to less populated areas, and just good for fun! I can see that it isn't a priority at this exact moment, and SE needs to pull their cards right; However this could be the kind of addition that could really set this mmo where it is supposed to be, which is back to the righteous and awesome world of Final Fantasy Fun!
Golden saucer or reasonable facimile would be great.
Traveling Carnival Caravan FTW!!!!!!!!!!!!!!!!!!!