Ehhh... sure It'd be interesting.
The VPs are useless anyway. Which is why i liked the Biden pick. He's amusing. Not particularly a good politican but he's always saying something crazy, misrepresenting facts and the like.
Though a Clinton vs Palin fight would be more interesting from a sociology reason to see how people would react to an aggressive Clinton going against another woman candidate.
I gotta think if he picked Clinton though McCain might of just went with his first choice in Liberman.