Joe Thomas is the only offensive lineman I see in there with real star potential. I advise all teams to stay away from Blalock, because from what I've seen, he's as soft as a throw pillow.
Levi Brown I've watched a lot of, him being at Penn State. I wouldn't classify him as a great player, but he'll be pretty good for a number of years. Sears is a big mauling player, but gets extremely lazy at times.
Beekman, Alleman, and Satele I've seen little of, so I won't comment on them. Staley reminds me a lot of Brown in terms of stability and reliability. Kalil is a consistent player, but he reminds me a LOT of former Bill Trey Teague, in terms of being too weak to handle bigger DT's.
For the Phins, the offensive linemen behind Joe Thomas / Levi Brown are OK, but nothing to write home about. Serviceable is a good word for them, but that's only my opinion.
In addition to Thomas and/or Brown, I'd like to see the Fins get Kalil. I think he can add some bulk and he has played in a pro style offense at USC. I think he will be ready to step in and play. If this group lacks star power, I think it makes up for it in being a little deeper at the guard position than previous years.
I think it is critical for the Fins to get Brown or Staley with one of their first two picks and a center or guard with one of the other in the second round. I wouldn't mind seeing them take a developmental QB in the third round (Kolb?).
There are many combinations of players that could be taken with the first four picks that could really help the Fins.