I think our problem in the pass rush is that most good base pass rushing teams don't rely on specialists like we do. They have freaks of nature like Julius Peppers or JPP. What they are not doing is getting a ton of sacks from 1st round draft picks at DT. They are getting most of their sacks from physical freaks at DE. Now Irvin and Clemons are athletic freaks but they are not physical freaks. They will never bulldoze a 320 pound guard to the ground for an instant sack like Peppers did to us today.
Basically, our two DEs are a lot like blitzing LBs. If they can't run around a blocker one way or the other, then they aren't going to create pressure.
BTW, this is why I said that I'd probably have preferred Coples over Irvin last year- and I really loved the Irvin pick. Coples isn't off to a great start obviously, but he was the one guy in that class that gave you a chance for a physically dominant pass rushing DE, and without that player I doubt we'll ever see an effective base pass rush.
That said, Seattle's pass rush explodes to its feet when it blitzes. Seattle's blitzing pass rush is as deadly as it's base rush is impotent. There wasn't a whole lot of base rush in the Green Bay game, for example.
I honestly think Pete Carroll needs to blitz more. Blitzing comes at a cost, but it's very rare that a Pete Carroll blitz gets picked up. Press the recievers to disrupt the quick stuff and force a QB to throw a 2 second pass. Unless you are playing Peyton Manning, good things should happen.
Obviously, I am a novice on this matter, and I also understand that you can't get predictable with blitzing. It's more complicated than I make it seem. That said, Seattle does appear to hurt themselves when they over commit to the base rush, ESPECIALLY when paired with zone coverage. I realize that is in Carroll's roots as a Kiffin disciple, but it didn't work before he came here, it didn't work in 2010, and it hasn't worked the last two weeks. It's best to stick with what works.