I've actually been thinking about this for some time ... and what I would say is, "What makes anyone think that isn't already happening?" It was a few weeks back and I believe it was KJR I was listening to. IIRC, it was Mitch who was recounting something about being with Holmgren over at the VMAC when someone from Schneider's office (who was obviously sent down) whispered something in Holmgren's ear. Holmgren answered him, "now?" The response was yes ... and Holmgren went off to Schneider's office apparently.
Now, the skepticist in me immediately said, "you're making something out of nothing" ... but another voice inside me inside said, "Hold on a second. Just think for a minute." Put yourself in Pete Carroll and John Schneider's place for just a second. You've got an incredible resource in Mike Holmgren -- years of NFL experience/knowledge ... former NFL coach ... former NFL GM ... has won the Super Bowl and coached many of the greats ... who aside from some occasional on the side work with KJRam is for all intents and purposes unemployed -- and just so happens to be still living in Seattle. He's attached to no one right now. In his heart of hearts, you know that he still bleeds Seahawks Blue. That Super Bowl Loss back in 2005 still leaves a bitter taste in his mouth ... and he wants nothing more than to see the Hawks win the whole thing. You know that although this is a prideful man ... he has great respect for this team, for Pete Carroll, for John Schneider, for Paul Allen and for everything that this organization stands for.
Given all of that, if you're Carroll and/or Schneider ... might you naturally bring in Holmgren every now and then? Say (for example) you're Carroll ... and you're playing the Colts this week. Might you dial up the game tape for Holmgren and ask him things like, "OK Mike, what do your eyes see? What tendencies do you notice? If you were to be the one drawing up the game plan, how would you attack these guys? What would YOU do?" Or maybe you're Schneider and looking at this next year's draft -- evaluating the tape of some college QB's out there. Might you throw on some tape and get Mike's thoughts?
I don't know if that's already happening (or even could happen), but in my opinion if you've got a resource out there (in your own home town) like Mike Holmgren ... you absolutely look to utilize that. You'd be foolish not to IMHO.