Seems cool. I hope they keep some of the features from Rome, such as the free moving of armies over the map, but make it historically accurate this time. Mmm, and maybe naval battles (although this would be less spectacular than it would have been in Rome).
Quite frankly, I would have preferred Rome: Total war 2, or a remake of Shogun, or maybe even China: Total war.
Also, I would like to see the Swedes as a playable faction.
Speaking of Total war though (especially Rome, but also the crusades in Medieval), did it ever happen to anyone that you had a surplus of soldiers that were either too costy or obsolete, but you didn't want to just disband them, so you packed them into large forces and just randomly sent them on a scorched earth mission against a rival faction? No?
Anyway, an option to upgrade obsolete forces somehow would be nice (retraining all the legions after the Marius reforms was a bitch, really).