Ah, look! Decisions! What horror, you might have to make a choice. Do you defend everything, or just the important regions? How much? At all times or only during war? Do you station militia or keep a mobile defense force to move to where you expect an attack? Decisions, decisions, decisions...
How horrible to not be able to look up the perfect, optimal, tested levelling-up-HOWTO somewhere.
We always had to make choices. But never could a huge army arrive on your doorstep arrive in your capital with but a mere's day forewarning.
Are we supposed to plop huge amounts of militia onto every coastal region, draining rural regions of all of their income, only to have them get crushed by an invading force anyways? The answer is most likely no. But then that means that any attacking army will not disembark directly on the capital, nor the doughnut townsland around it if on Dwilight, but on the next rural region next door. Giving absolutely no time for the realm to react.
It's effectively a nuke. A weapon against which there is no defense. Are wars going to be more fun once people start plopping in huge armies next to enemy capitals by sea?
