HHH and Benoit, have done this since (if you look back) the original Radical invasion,it's time has passed. HHH is the best heel champion since Yokozuma, but the WWE is a promotion that is better with a face champion.
Benoit, as boring as he is, has developed a following. Chris Benoit should stay champion,and what is better the WWE blueprint is disrupted by him;Years of fan optimism favoring the face champion has given way to the fan wanting the heel to win.
I say since Summer Slam is so huge of an event have Raw take the dive to SmackDown.