I'll bite, but I'll grade our current roster:

A. Smith: A
C. Hampton: B- (I like Big Snack, but it's time for him to move on.)
B. Keisel: B (very underrated, so I'll show him some love)
J. Harrison: A
L. Timmons: C+ (I'm not sold on Timmons; Fox has filled in and played better than him this season)
J. Farrior: A (getting older, but still has it)
L. Woodley: A
I. Taylor: C (highly overrated)
W. Gay: C+ (the book is still open on Gay, so his grade is in question)
R. Clark: B
T. Polamalu: A+
Depth:
T. Kirschke: F
Z. Hood: B (again, the book is still open but I think he'll have a solid career as a 3-4 DE)
N. Eason: C
R. Harris: C
C. Hoke: B
A. Frazier: F
K. Fox: B+ (Fox has done nothing but play hard when called upon.)
R. Boiman: C+/B- (I really like the addition of Boiman, especially to ST's and he has been a quality starter in the NFL)
P. Bailey: C+ ( I'm pretty high on Bailey, just like I was when J. Harrison sat the bench and watched C. Haggans start week in and week out. I think Bailey has a lot of upside, but right now he's a BEAST on ST's)
J. Burnett: B (I think this guy has a load of talent and him and Lewis will be the future starting CB's at some point)
K. Lewis: B (see above)
D. Townsend: C
A. Madison: C
R. Mundy: C (the book is still out on Mundy, but I look for him to be cut next season.)
T. Carter: F