Probably this was already mentioned, but I didn't really have time to go through the whole thread. In my opinion:
- trade could be cooler, but does not really need to. I think most would agree it's not a priority to make it better for the sake of itself.
- however, the moment someone can play the trader subclass, playing this class should be fun. At the moment I don't think it is. Simply put: no one sells food. Or if they do, is at insane prices. The amount of gold to be made simply doesn't justify the potential problem one would incur into if this is discovered, because the penalties of not having food are terrible. Additionally, traders can't even "break in" people's deals since lord to lord transactions are quite common, restricted to realm, rarely over distances such that a lord can't make it and anyway not anonymous.
- The black market option was really cool. I think many people enjoyed it, and it gave a good trader a usefulness to a realm on many sides. Moreover, it directly put a threat to lords stockpiling food like hell, as smuggling out of their region was ridiculously easy and cheap. (now there is just the hassle of the granaries). While I agree it is something devs are still thinking about and not easy to implement the trader class without the black market option is just meaningless..