@schwammlgott yeah I think the idea of buying items to sell at other outposts should be Merchant Alliance specific.
I just like the concept of only being able to do certain voyages if you are an emissary. If I had to come up with some, though...
Gold Hoarders: Hide and Map the Chest of Ancient Tributes. Since we've been taking the chest out of the vaults to stop the raids, now we are tasked with hiding the Chests. If we manage to follow the instructions and hide the chest, we can return with a marked map to turn in. BUT other pirates can steal these maps and dig up the chests or turn in the map.
Order of Souls: Recapture lost souls. Collect the Black Light Box from the trading company which is used to store found souls. You can also turn your own lamp black which will direct you to the location of the lost souls. You can turn in the Box at any point but the more full, the more reward.
Athenas Fortune: Find Athenas Mermaid Statues and collect their Purple gems. You can turn in the gems or collect 5(10?) to buy a map for the location of a Chest of Legends.