Actually, since Dedmon came back from his injury, he's been averaging about 4.8 PF/36 minutes. Tiago averaged 4.4 his first two seasons. Blair spent two years as a starter averaging 4.4. Stephen Jackson's first year here, he averaged 4.6, and Malik Rose averaged 5.1 for his whole freaking career.
I don't disagree that Dedmon is still fouling a bit much, and maybe it would be worse against starters. But I like the fact that he is aggressive and tough on defense. There's a reason why Pau is only picking up a couple of fouls a game - he spends too much of his time playing matador. And he's NEVER a factor in transition D.
Maybe you're right, and it wouldn't work. But I'd like to see.