Overall the Packers bench isn't that inexperienced. There are certain positions this is true for (WR, ILB and CB) on which Thompson spent his first four draft picks on.
I think we need to add QB to the list.
How about OL? Barclay is coming off an ACL, he's the only backup who's taken more than a smattering of snaps, and the others have not looked very good in limited play.
FB is the frequently forgotten position. Pre-bye, Kuhn played 58 offensive snaps with Lacy putting up the following stat line: 105/428/4.1. Post-bye, with Kuhn getting 191 offensive snaps, Lacy went into 141/711/5.0.
http://www.foxsports.com/wisconsin/story/green-bay-packers-annual-checkup-john-kuhn-031215
While I like Ripkowski's potential, it could take some time for him to be productive in this blocking scheme with this RB. We've seen inexperienced H-backs in the past accomplish little except muck up the works (Quarless, R. Taylor).
All it took was Quarless' gun idiocy to expose the TE position which was hardly a position of strength to start with.
We've already explored the issues with the D-Line by just subtracting Guion from the equation.
The only position groups with experienced depth are S, OLB and RB.
How did this come to be?
1) Last season was so injury free in the starting ranks that the only young players who got any meaningful playing time were the guys who are now starters: Dix, Linsley, Barrington.
2) Perhaps overlooked is the 2 year draft/UDFA hole from 2011 and 2012. There are only 7 players left on the roster from those draft classes. Daniels, Hayward and Cobb are starters. Perry might or might not be, but that is one of the 3 acknowledged positions of experienced depth. The other 3 are Barclay (again, coming off an ACL and the only qualified OL backup), Tolzien (can he or can't he in a short-term pinch?) and Richardson (who's primarily an ST player and occasional dime safety at one of the 3 positions of depth).
To further illustrate the hole, there are as many players on the roster from the 2008-2009 draft classes as in those 2 draft classes, despite the fact that the 2012 drafted players would still be on cheap rookie contracts and immune to free agency to this point.
3) The 2013 draft class is interesting as well.
While there are 10 players from that draft class on the roster, a particularly high yield, 6 of them starters or D-Line rotational players. And despite the 2 D-Line rotational players form that class (Boyd, Jones), we've already discussed how the subtraction of one player (Guion) leaves the position group exposed regardless. The other 4 "depth players" are Lane Taylor (who's perennially on the bubble with limited unimpressive experience), Tretter (meh, limited as a center backup, few snaps to date), Mulumba (again, in the experienced OLB group but primarily an ST player) and Palmer (another bubble player who hasn't played at his new ILB assignment.)