Duncan still had 40 points this year home slice. That's a pretty darn successful season in my book. Sure, he didn't reach his previous years total of 57 points, but he still had a great year (despite other teams focusing on him more). I think Kozek can do the same thing next year chief.
And if teams choose to focus on Kozek next year, they'll just be leaving guys like Duncan, VV, Trupp, Lil Toews, Gregoire, Hextall, Genoway, Watkins, etc open. That's fine by me...he'll have less goals, but just a ton more assists.