Hexagons

[Highgeneral]

a hexagon would make citys look stupid

 

[Pirate]

Hex maps would look great, - the rivers could actually meander and wouldn't have to flow at 90 degree angles!

However, I also use the keypad to move and it would be very hard to switch away from something so intuitive.

 

[EddyG17]

besides making the game look better, IMO you could always use the numbers on the rigth side of your keboard to move your unit, it shouldn't be too difficult...