Every team is always optimistic after a draft and I hope we got a few winners. I agree it's hard to tell for about 5 years, so these gradings are obviously purely for entertainment purposes.
Just for fun, I tried to find some grades that occurred shortly after the 2008 draft (5 years ago). I found Mark Seidel's grades for all the teams:
http://www.thehockeynews.com/articles/16989-Mark-Seidels-Blog-2008-NHL-draft-grades-Part-1.html
Links to parts 2 and 3 are in the page above, but part 1 has the Central division.
Keep in mind we drafted:
Nikita Filatov
Cody Goloubef
Steve Delisle
Drew Olson
Matt Calvert
Tomas Kubalik
Brent Regner
Cam Atkinson
Sean Collins
Seidel gave us a B grade shortly after the draft:
Looking back on this trade I'd probably give it a B+. I'd like to give it a A- because it is a really good draft in terms of nabbing Atkinson and Calvert, and I still feel Goloubef has NHL potential. I had high hopes for Kubalik but obviously he's not ours anymore. The whole Filatov fiasco is why I have to settle for a B+ grade.
I especially liked the part I bolded, seeing as it's the later picks that are really panning out. Anyways, this article prompted me to do some web searching so thought I'd post the results.