Projected depth chart, which position should Raiders target in draft?

While Reggie McKenzie had the most money in the history of the NFL to spend on free agency, he didn't go for the big splashy signings opting instead to sign volume and trade for a quarterback. As a result, the starters on the depth chart look a lot better than last season overall but there is little depth to be had. Here's a current look at the team's expected depth chart:

OFFENSE

LT: Donald Penn

G: Kevin Boothe

C: Stefen Wisniewski

G: Mike Brisiel?/Austin Howard

RT: Austin Howard/Menelik Watson

Tony Bergstrom, Lamar Mady, Lucas Nix, and Khalif Barnes are depth on the line, all guys who saw substantial playing time last season.

QB: Matt Schaub, Matt McGloin (Terrelle Pryor will not be on the team a month from now)

RB: Darren McFadden, Kory Sheets, Latavius Murray

FB: Marcel Reece, Jamize Ozawale

WR: James Jones, Rod Streater, Denarius Moore, Andre Holmes

Juron Criner, Greg Jenkins and Brice Butler are depth at WR but none made a significant impact last season.

TE: Mychal Rivera, David Ausberry, Jeron Mastrud, Nick Kasa

DEFENSE

DE: Lamarr Woodley

DT: Antonio Smith

DT: Stacy McGee

DE: Justin Tuck

LB: Kevin Burnett, Nick Roach, Sio Moore

CB: Tarell Brown, D.J. Hayden, Chance Casey

S: Tyvon Branch, Charles Woodson, Usama Young

That's everyone of note. There's very little depth at defensive tackle and in the secondary. The team could also use an influx of talent at the tackle, guard and wide receiver spots as well as at running back. There's also practically nobody behind the starting three linebackers.

So what position would you prefer the Raiders address the most in the upcoming draft, further team cuts and UDFA? Specific players aside, which spot on the roster needs the most attention?