I really like the idea you have come up with. I was always curious about how many people had voted one way or the other - when you are the nodes poster you sometimes get an idea - your XP goes up and down.
I would be interested to see the 'tension' on a node after I voted. I doubt we will see the tension being displayed before your vote is cast. The same arguments against displaying the reputation work just as well against displaying any information regarding the nodes tension.
I didn't believe in evil until I dated it.