Recent off season trends: lost most valuable receiver two years ago (may or may not have been critical loss, as he was not that big a help to Raiders) and most valuable quarterback this season (may or may not have been critical due to massive knee injury during last season.)
Outlook for 2006-07: There is always next year.
(Remembering Fran Tarkenton, Alan Page, Carl Eller, Paul Krause, et. al. with nostalgic sigh)