My totally amateur opinion:
Marty Mornhinweg OC Eagles
Am I the only one that thinks the Eagles offensive SYSTEM is overrated? If they don't get DeSean Jackson on a seam route for a TD they aren't that great. Looking at the system and routes that he put on the field I'm not a big fan. I think we'd go back to the old JP ball where we'd score the occasional deep-ball TD to Lee and not much else.
Leslie Frazier DC Vikings
I love that his defense was 3rd in the NFL at getting off the field on 3rd downs, this means that in critical situations, he knows how to call the right plays. Negative is discipline - 109 PIMs on the defense was near the highest in the NFL. When I watch this group play they are motivated. But for some reason this guy doesn't shout out to me as LEADER. Some head coaches have this look or fire in their eyes...it's intangible and entirely wrong to evaluate something like this though, since there's no way to measure it. On paper I don't mind this pick. My gut doesn't like it though.
Jason Garrett OC Cowboys
Have liked the Cowboys offense this year. Seem to be peaking at the right time. I really wanted Sean Payton when he came out of Dallas to the Saints and I'm afraid my interest in Garrett is tied to that. But either way I have a good feeling about this guy.
Brian Schottenheimer OC Jets
Not a fan. I don't like the Jets offense at all. It is very vanilla and reminds me of the various offenses the Bills have been running. I'm petrified of this signing turning into another same ol same ol Bills hiring we're used to seeing. Yes he likes to run the ball and yes that's good in cold weather, but what else can he really do?
Russ Grimm OL Cardinals
I love this signing. The OL Has been the biggest problem we've faced and this is a guy you just KNOW will get it fixed, ASAP. To me you fix OL before you even bother trying to evaluate how your QB/RB can play. He is a big-time winner in terms of the staffs he has worked with and watching Arizona the last couple years they have done a great job protecting in big games. The fact that he also has the Assistant HC title says a lot about his value/role in the team.
So to sum up, I would take in this order:
1) Russ Grimm.
2) Jason Garret.
3) Leslie Frasier
Not interested in the other 2.