if you are still interested, have a look on my final concept. As promised, I posted it here:
Cities & Units
With some alterations in city combat (which I really like) and all new abilities and promotions mentioned and explained, the thread tries to flesh out the chart and correlates all abilities.
A comment would be nice, but is by no means mandatory, of course!
I wish you "Happy Easter"!
I'll be with my parents over easter, so I'll probably not be able to be on-line for a few days and therefore probably not able to answer soon (if you decide to comment).
What's about your chart? Did you abstain from publishing it? Why? It is good!