This is great….great start. A lot of the ideas in here would make it even better. Unfortunately a lot of these ideas require more columns, and there is not that much room. I was going to try a different tactic and list the functions I find myself wishing for when I play.
(going to skip the ones you already have, like are all my cities making troops?).
Are each of my cities defended adequately? (mouseover for troops, or maybe show troop icons behind city name text)
Is there any enemy within range of each of my cities? (Maybe outline the city in a red box if an enemy is seen within the influence or within visual range)
Where the heck is my navy city? (column? Seems kind of a waste but I always seem to be looking for the naval city)
Have each of my cities built all the benefit buildings for their specialty, i.e. gold, food, metal, etc… (Put resource numbers in Red if, and only if, there is a bonus building available for that resource. i.e. have the right city level.).
Number one resource is going to be a problem. Many cities have gold mine and something else. So, in that case, the table will indicate gold over food, crystals, tech, arcane, metal, etc… You really can’t get away from showing a column for each resource, accept it! There is a lot of horizontal room in the building production and troop production column, shorten it a bit. (shorten building and troop columns, add all resources. OR column showing the icons for the top 2 or 3 resources).
Building and Troop building time need to indicate turns. I can’t tell if the troop or building production is one, two or three turns away. (Maybe use blocks or text overlay, think Galciv2 does text overlay).
I want to build some big troops (12 people), what the best city to build in? Or which one had the troop training reductions. (Column showing reduction of troop time, i.e. -75%).
I saw some comments about influence, I don’t think I care about that.
I saw some comments about building tiles, think that’s a good idea.