I was thinking how convenient it would be, as a crafter, if there was an NPC in the game that sold market reports: what was selling for each crafting class, and for how much, summarized over the past day or week.

Sure, you could just do research on the market boards to find that, but it would be a lot more convenient to just pay some gil, or maybe blue scrip for more informative reports.

Alternatively this could be a real-money subscription add on, but that's too close to pay-to-win for my taste.