If you wanna play flat map you can go play DEVO, the map.. the "tightness" of it is what makes it so good.. the ability to get good k/d and out tactic people comes with the terrain... if u make it big and flat there is "to much room for micro"
Styling the map (colors on cities, playernames by color and whatnot is a matter of style.. if u like it go with it.. else skip it

my 2 cents