I've done this the last couple of years for a UK based NFL site I'm active on, as I'm new here I thought I'd give it a go. Any comments are welcome.
Offense (24.5):
Quarterbacks (3): Rodgers, Flynn, Brohm
Wide receivers (5): Jennings, Driver, Jones, Nelson, Martin
Running backs (3): Grant, Jackson, Sutton
Fullbacks (2): Hall, Johnson
Tight ends (2.5): Lee, Finley, Havner
Offensive line (9): Clifton, Colledge, Spitz, Sitton, Barbre, Wells, Giacomini, Lang, Meredith
The quarterback and receiver groups take care of themselves. As for running back Sutton looks a good bet to make it over Wynn who's perpetually injured, if Jackson's injury is more serious than first thought I could see the Packers keeping 4 RBs, possibly at the expense of Underwood the corner who I have making the roster below, but my gut tells me only 3 will make it. One of the fullbacks has to miss out and it won't be 5th round pick Johnson, I'm guessing it'll be Kuhn. Havner is a two-way player at TE and LB, so he's worth keeping around, hence the half-point. As for the offensive line I hope the Packers finally cut ties with Moll and go with youth as Meredith and Lang won't make it through waivers.
Defense (25.5):
Defensive line (6): Raji, Pickett, Jenkins, Jolly, Wynn, Montgomery
Linebackers (8.5): Barnett, Hawk, Kampman, Poppinga, Thompson, Matthews, Bishop, Chillar,
Cornerbacks (6): Woodson, Harris, Williams, Blackmon, Lee, Underwood
Safeties: (5) Collins, Bigby, Smith, Rouse, Bush
I'm assuming Harrell is going to be put on injured reserve, and the rest of the D-line picks itself. Brad Jones is a tough cut at linebacker, it's probably between him and Underwood (CB) for the final roster spot (or if the Packers want to use it on offense, between Jones, Underwood and DeShawn Wynn), Jones has more chance of making it through waivers to the practice squad so I've cut him. The penalty prone Jarrett Bush gives the Packers depth at safety and corner so he stays, especially with the injuries to Lee, Blackmon, Underwood and Rouse. Obviously the Packers have the inside track on the injury situation, I wouldn't be surprised to see any of those four put on IR.
Special teams (3):
Kicker: Crosby
Punter: Kapinos
Long-snapper: Goode