Wow, that must be good experience if Diaw could improve from it. His defense looked a little Voskuhl to me at times so I imagine there is room for improvement on his big man skills.
One good reason to keep KT around is that he is actully pretty good as a defender - which is what the Suns need to learn to do. I hope they focus on interior defense over the summer, because that is where the team is the most vulnerable.