"It's basically a "I've now got this province selected, and I want to select _that_ province, but I don't want to move my hand over to the mouse to do so.""
AHH HA!
Have we found a 1 handed gamer?
Anyway since the provinces arn't layed out in a grid I don't see how this will work. Sure you can 'make' it work, but doesn't seem like that big of an advantage...
Unless you really are a one handed gamer...
