The problem is that a full simulation of the feudal system would be... complicated. Maybe by making units raised on a province lower permanently its income until resettled? Or, for what I´ve heard about the new TW games system, lowering its population, until disbanded?

I think that overrrealism is usually wearing, in any event. For instance: turns, as they are now, can be long enough (honestly, how often you fight the six 45 minute battles that can arise in a single turn? I pick the most interesting one, or ones, and autocalc the rest (barring sure defeats which I could turn around)