I really don't think they are going to go backwards on the map technology. I would not expect a Risk style map.

Historical unit accuracy would be highly desirable and I hope they implement that. I think an important aspect of their games were lost when they tried to "balance" the units rather than replicate the historical accuracy of what happened. There is a real opportunity to educate and inform people about the time periods they pick. But it will be our multiplayer brethren who potentially spoil that with their desire to have a meaning full multiplayer experience. They do not coexist in the same unit roster as far as I'm concerned.