Let's keep in mind that draft eligible players rarely make an impact when playing at the WJC. Joe Thornton and Vincent Lecavalier are just two players who were support players at best in their draft year. As such, I don't think those draft eligible players that did contribute should be dismissed.
To me, Kessel actually doesn't look like a high risk pick. I think his overall offensive instincts aren't the strongest, but he has pro speed, a great release and a good motor. Worst case, I think you're looking at a Courtnall type scorer. I actually think his upside might be a little lower (certainly the Crosby comparison is unfair to him), but from where I sit, he is a safe bet to be a 25-30 goal scorer in the NHL some day.
But I also agree EJ has got to be considered #1 now. The guy really was fantastic, and the fact that a few of the goals were partly his fault has more to do with him being one the best d-men in the tourney getting matched up against a player that would be in the Calder race if he were in the NHL, and other pro players. For the most part, he faired very well one-on-one though, and I liked the way he covered up for JJ when he rushed deep. I think he has certainly shown more than either Suter or Phaneuf at the same age, and don't quite understand how someone can say he doesn't have the upside of those two. He might be higher risk at this stage, but he skates better than Phaneuf and is a bigger package than Suter.
I really liked Toews game, the way he used his linemates and how he battled, but the Staal comparison is a bad one. Staal was an elite skater from the get-go, and Toews will never be a top skater. He'll likely be a really good NHL forward one day, but I'd still have to say he is probably #3 on my list.
Finally, I think Backstram has placed himself in the top 10, and might keep moving up. Top 5 is definitely achievable - I think people forget how much movement can happen in the latter half of a draft year. Look where Kopitar ended up, and where he was at mis-season.