There are a several reasons why the feudal setting works as well as it does, in ways that other settings can't fit.
For one, everyone at every level relies on the same basic resource: holdings. Counts, Dukes and Kings can be stacked up on top of each other, but all have at least one holding to their name allowing for more-or-less full playability across feudal ranks and government types.
Two, families allow you to groom your potential successors literally from birth. This allows for richer, less random-feeling characters than what you get in, say, Stellaris. By extension, the family politics this allows for its arguably the best aspect of Crusader Kings.
Three, relative stability. The same titles will stay in the hands of the same families unless something happens to drive them off of them (say, a Holy War). The same couldn't be said for a bureaucratic system, in which even the great families will sometimes go generations without office-holding and a successful career likely means holding different kinds of posts all across the empire, not staying near a personal demesne.
The feudal setting allows you to play a line of characters that you have a real role in shaping, holding titles for many generations, giving you an incentive to invest in demesne improvements, favorable laws, etc. Without those elements in place you need a different set of resources and motivations.
For one, everyone at every level relies on the same basic resource: holdings. Counts, Dukes and Kings can be stacked up on top of each other, but all have at least one holding to their name allowing for more-or-less full playability across feudal ranks and government types.
Two, families allow you to groom your potential successors literally from birth. This allows for richer, less random-feeling characters than what you get in, say, Stellaris. By extension, the family politics this allows for its arguably the best aspect of Crusader Kings.
Three, relative stability. The same titles will stay in the hands of the same families unless something happens to drive them off of them (say, a Holy War). The same couldn't be said for a bureaucratic system, in which even the great families will sometimes go generations without office-holding and a successful career likely means holding different kinds of posts all across the empire, not staying near a personal demesne.
The feudal setting allows you to play a line of characters that you have a real role in shaping, holding titles for many generations, giving you an incentive to invest in demesne improvements, favorable laws, etc. Without those elements in place you need a different set of resources and motivations.