Zadina: A, Honestly couldn't pass him up. Wish there was some way to blame Holland, but the guy could be the team's first 40/40 guy since Z and Hossa in the late 00's.
Veleno: B/B+, in a vacuum its a good pick. Unfortunately we don't live in that vacuum. He looks to be a solid Jordan Staal style 2nd/3rd line anchor center. And that would be great if Detroit didn't need defense. At this point the grade drops more because of the opportunity cost of drafting a center instead of maximizing their chances at D more than anything else.
Berggren: B+/A-. Again another player that falls into the category 'good in a vacuum, but not great given Detroit's needs'. Detroit needs more wingers like most people need another hole in their heads. Especially with great to elite wingers in the system like Ras, Zadina, and possibly Mantha. Add to that they also have AA, Bert, and Svech who all could be slotted into the top 6, this feels like a redundant pick.
McIsaac: B+, I am pretty happy with this pick, but it would have been better if this pick were part of a spat of 3 others that were high risk high reward, as McIsaac feels like the safest of the d available. Being Detroit's top D pick in a year that was very deep on defense feels like a huge missed opportunity.
Regula: C, Not high on this pick at all, but whatever, its a crap shoot.
Those are all the players I am at all equipped to even remotely analyze. I'd give Detroit a B+ for the draft. But I think drafting 3 forwards with their top 3 picks was a mistake and could set back the rebuild for years. But, at least they will likely score a ton of goals.