I'm really trying to understand, but I don't think I do. For now, all I can say it seems realistic but also very complicated. I'm big on keeping it simple. That's why I like the three basic roles that exist before gunpowder, it works. And I feel that the modern eras are too complicated and there isn't really a balance between classes.
I'll try to remember to come back and read your post again to try and get it.
I am not sure if I get it myself. The whole idea is very complicated. We'll just have to see how it plays out in GnK. One thing is for certain we need a better AI.
In modern times warfare is much more complicated, even though its more technical. There are a lot more types of units to worry about. Most of these are specialized and used for a certain purpose. Technology does not make the logistics of it all any easier. You have to get the correct type of unit, in the correct position, at the right time. If not your dead. You may end up dead anyway. Warfare faster and much more deadly. Modern wars should be portrayed in CiV in this way.
This is why many times I play to the Medieval or Renaissance era, and go for victory point victories. Besides, I am into those time periods anyway. If I go further, WWII is as far as I like to go. Modern war is not my thing for the most part. See the thing about the Modern era and even WWII is the fact that you not only have to worry about land and air units, but several types of ships as well.
In the old days its riflemen/cavalry/cannon and frigates. With four types of units it is so much easier to organize your forces and fight wars. In modern times, I am looking around the map trying to decide what type of unit I should build. Then you have to figure out where that type of unit would be best used. Indeed much more complicated, but I have to say it still is a lot of fun. That is the way it should be though.