Why the new duchy system? Have people really been asking for the ability to split one duchy into two? To have the Duke and Lord of a city be different nobles? What does this change add to the game? Does it make the game more balanced? More fun? More realistic?
Because all I see is needless complexity that adds even more boring busy-work. I don't want to have to open up Excel worksheets just to understand my realm's feudal system.
Because. Yes. Yes. A lot. Yes. I hope so. Absolutely.
The new system is actually simpler than the old one, once you accept it. In the old system, some regions were also duchies, while some were not. Some regions belonged to a duchy, while some were their own. Some regions could switch to a different duchy, some couldn't. Some region lords were also dukes, some were not. And so on.
In the new system, a region is a region is a region. Period. A region lord is a region lord, period. A duchy is a collection of regions, and has a duke.
If you try to draw the two systems down on a piece of paper, you will very, very quickly realise just how much simpler and easier to understand the new system is. The old one just seems simple because you're so used to it.