I am pretty skeptical that we'll ever get a good pass rush so long as we have two nose tackles on the field and fail to blitz in support. Getting a better 3-tech will help, but Jason Jones is a lot like Ansah and he didn't make a huge impact this season.
To me it's very simple, either embrace the blitz or trade Bryant. I'd love to be wrong, but I don't expect I will be. No knock on Bryant, he is doing what's asked of him and doing it well, but asking for results with a Red Bryant front four is basically no different than asking for results from a 3 man rush.
When Seattle does blitz, or even shows blitz from enough places, the pass rush is actually really good. The talent is already there. I think Pete (or Bradley) just needs to wake up and using a 3-4 mentality to match their 3-4ish personnel.