Last hours i played with Merchant character (focused on gain as much profit as i can), and it is quite fun with mods like Economics of Skyrim and Bank of Skyrim, (and Tundra defence of course) , and some others.
I began to wonder that in the next DLC we can have Merchant's Guild, with its own quest line, radiance quests and some more IMMERSIVE feautres.
It will be quite fun to forge your own trade organization, with caravans and such.
For now we don't have any good Merchant's guild mod (except one which is only like house mod), and it will be great to see one in DLC.