You don't need epic maps, but I loath playing on anything smaller then 3 city maps. Also I do quite fine with games with large environments, and maps, I love the Fallout Series, and Skyrim specifically because of that, but of course those games you don't control more then a couple people at a time... To me the making of a good game is a bit of both, micro managing is tedious to some but fun for people like me, as long as its done right, hence my love for the Guild 2 series.
I am assuming in a game like Kontor, it will follow in Guild 2's foot steps and only allow small amounts of thugs per house, and a fistfull of employees per building, after all its not a military game, there is no need to conquest a city, or fight in mass in the streets. My biggest concern with Kontor is business, I love Tycoon games, and tossing in a whole dynistay angle makes it all the more better, but it gets rather tedious when you can't build your starting ventures with in the safety of the city, and even worse when there is not enough demand, because you got a single competitor.
The supply demand angle is the thing me and my roomates bicker about the most, we all no full and well unless there is a few cities to work with, having more then one of something in town results into market overflow from time to time. Heck my sister who plays refuses to own a building that an npc owns in town because early on hiring escorts is expensive, but running into bandits on the roads is far worse. Unlike her though I don't mind it, I simply look for wholes in the market and keep up back stock for when there is an opening on the more profitable goods. Early on though you don't got much to work with, and neither does the NPCs so it becomes a game of chance every time you send your cart to market in your town to see who gets there first lol.