Well, you can't watch every game, so even the players I've seen, I like to read certain people as checks, Wheeler seem to be the best, Appleyard is pretty good, McKenzie is mostly the scout consensus.
But there is group think, I thought the fact that Buium fell that far was a red flag, then I saw him against WMU and the NHL POs in a sheltered 3rd pair role. In both cases, I saw a guy with average speed but good short area agility and vision who really struggled against an aggressive forecheck. I don't doubt he'll be a top 4 D-man, but I think his college numbers were a bit inflated playing for Denver and he's not going to be the elite D-man many projected.
In the same fashion I'm a bit skeptical of Bump after watching him struggle against Hershey's pressure, I'm not sure he's NHL ready and probably needs to adjust from being the "man" to being a complementary wing. He needs to get stronger b/c he'll make his living playing like Foerster, not Tippett.
On the other hand, I think Bonk is underrated b/c he played with Dickinson who's going to be a top flight offensive defenseman (he's the one I think Danny wanted and thought Buium would push down to him), so Bonk did the dirty work. The fact that he was "Bumper Bonk" on a team loaded with talented forwards tells you he can score goals, and I saw him make a number of long, accurate stretch passes stick to stick.
The other player who really impressed me is Grebenkin, he's inconsistent which is the only thing holding him back, but he has really good short area agility and puck handling skills, and is a good passer. Given his size, it comes down to how badly he wants to excel - the top six talent is there.
A third player flying under the radar is Gaucher, big RH center who was probably the best player on LHV in the POs. He's a bit like Kemp, overlooked player who worked his way up from the ECHL. Unlike Hogdson, he's got NHL talent, skating might be his only limitation and it won't surprise me if he continues to improve. Plays a smart, physical game, has a good shot and good ice awareness.