Last year on average the defense gave up 28.3 points game, which was bad enough to to rank the Raiders 29th overall with arguably the worst defensive starting roster including the 2 deep the team has probably ever had.
The Raiders only lost one key performer in Lamarr Houston and it's likely his position loss was a wash with the signings of Justin Tuck and Lamarr Woodley. Otherwise every other position has been upgraded with free agents in addition to players signed for depth. The signing of Tarell Brown has the potential to have as much of an impact to the secondary as Tuck will to the defensive line.
Obviously the draft picks will also have an impact on the future of this defense with the attention GM Reggie McKenzie spent during the 2014 draft after adding Khalil Mack, Justin Ellis, Keith McGill, TJ Carrie, Shelby Harris, and Jonathan Dowling.
I'm thinking without a good offense this defense should at worst go from giving up 28.3 points a game on average to giving up less than 23 points a game. If Greg Olson and Tony Sparano can take Matt Schaub and the additions to the O line and create an offense that controls the clock and keeps their defense well rested, it's possible that points allowed could become less than 21 which would make them a top 10 defense.
What's your opinion Raider Nation?