I really like the series of info screens under Govern.  They contain good, useful information, well organized, and with a nice visual flavor.

Just a couple of suggestions to consider:

First, add in a screen that lets you look at cities indexed by different buildings.  That way, if you want to find all cities that have barracks, you can click once, and see them at a glance.  Click on the city itself in the spreadsheet, and you go to it.

Second, add in a screen that displays all your champions.  Sortable by perk.  No more, "Hmm, which element's spellbook should I buy, next?  Who has what?"  Single-clicking on the hero should take you to their image with all perks displayed.  Clicking a star alongside them should take you to their location on the physical screen.