One of the things that has bugged me throughout GC3, was the lack of attention to UI. I could get around most of the bugs, and in fact did exploit some of them. But ease of navigations around the vast number of menu options there are .. a UI that makes sense just makes sense.
So here is my first suggestion:
if I click on the top bar (showing resources) on the "Weekly Income" area, it'd be great if that default-opened the Civilization - Economy Tab