Well, I disliked about MTW that anyone could become a general. Any peasant could get an asignement, become governer and marry even a princess. That's not just unrealistic, it's entirely against the medieval mindset. If you were born low, you couldn't just become great, not even with talent. Ok, you might say people could be knighted, but not even a knighted guy would normally be able to get a high title. Status was acquired by generations and without status, you couldn't become a leader.