I'll try to break it down.
WR is probally the strongest position in the draft.
TE is one of the weakest, but with two studly prospets in Milller and Olsen, it will be good at the top.
QB is very weak in terms of first round talent. The second weakest in the past 5 years or so.
OT could is very strong, but is top heavy. Very little talent will make it past round one.
OG is decent. Blayock and the OG Auburn highlite the short list worthy of 1st day picks.
OC is about what it was last year. No prospects are as good as Mangold though. Datish and the Fresno C are the two best, but nothing more than mid second round talent.
FB is strong this year and is highlited by the FB from Rutgers
RB is actually pretty stong and fairly deep this year. AP and Lynch get the hype, but guys like Irons and Darby make for good 1st day alternatives.
DT is average as it stands, but could improve drasticly if Okam and the LSU guy enter.
DE is a very strong class again, especially at the top. Adams is the top guy...a smaller, better pass rushing Mario.
OLB is weak at the top IMO, but has very good depth with guys like Dan Conor and Earl Everett
MLB is above average at the top, but very little depth showing itself to this point. I feel you will be hard pressed to find a second stringer in the 3rd round this year.
CB is the absolute hardest position to judge. 90% or so of the talent is underclassmen. Hall is the top Senior, but guys like Cason and Revis make it an awesome class if they declare. CB could easily wind up being the second deepest position in the draft. Potential starters in the 2nd round is almost unheard of for CBs.
SS is thing, but strong. Griffin and Rouse highlite the position, but guys like ziboroski or w/e from ND and Welding from Wyoming could provide good depth.
FS is outstanding at the top with Landry and Nelson, but really falls off from there. McCauley may be made into a FS, and some may try it with Griffin, but I don't expect those to happen, and this will be one of the weakest positions in the draft.