I watch a ton of BIg Ten football. Seen him play about 15 times the last 3 seasons, including in person two weeks ago. He can be very good in the right offense IMO. I'd take a 4th round flyer on him but NO higher. He has been shell schocked from SO many hits the last few seasons. That Oline at PSU is horrific to say the least. The Nittany Lion faithful think it's him but it really isn't. James Franklin has done a very poor job overall but especially on the offensive side of the ball.
Hackenberg does have accuracy issues but a lot of it is from being so tremendously uncomfortable in the pocket. I'm not making excuses for the kid, just calling it like I see it. Like I said: solid 4th round pick. Put him behind Romo and Cassell to learn for a couple year and go from there. If Dallas doesn't take him around the 4th then I can see a run oriented team like Pittsburgh, Kansas City or even the Bengals taking him.