I was wondering. Myself I find historical accuracy very important when it comes to Total War games. I really want to feel like I'm there, even if this makes the gameplay slower and more difficult. Fantasy units, too quick battles and unrealistic features break immersion for me.
I can imagine others prefer a arcadish aproach where quicker and spectacular gameplay and somewhat fantasy units are welcomed. It could be argued that, especially for the broader audience with less historical interest, the more arcadish approach is overall more prefered.
For the Creative Assembly this is a delicate matter. They need a balance to appeal to the broadest set of gamers to be able to develop these kind of games. An example: In Shogun 2 every warrior, down to the last yari ashigaru, is uniformly dressed and possesses some form of armor. Obviously this was historically unlikely but it adds a certain epicness. Even in Shogun 1 they added the Kensai, a single super samurai capable of killing entire units.
Which is why I added this poll:
How do you assess the balance of epicness vs. historical accuracy in Shogun 2?