What do I think? I think the boards aren't even needed. SE designed the game so that you can acquire every mat, craft everything, and meld every item by yourself (with a few friends for instanced mats, of course).

So I think you're putting too much faith in the economy. Do everything yourself and don't worry about who's the richest person in Eorzea. The ONLY things that restrict you from playing due to lack of money at the moment is gardening for mats, and raising your chocobo's level.

I would love if they got rid of every market board and forced everyone to barter and interract with other people via a bazaar again.