One thing I've considered is that perhaps the starting 5 against some teams should include Tony, KK, and then one of Taylor/Wadley. The factor is whether or not KK could respectably defend the opponent's 3. I'd have my doubts, but it's a thought.
I don't see much of a difference in how he defends a 3 vs a 4, what I'm more concerned about is clogging up the paint for Campbell post touches. We really need floor spacers at every other position for him to go to work 1 on 1 down there.