For every Coop, there's a Coach Joel "Blind Beggar" Q. and Lindy Ruff there to balance it out.
Again, I get why FSG did the extension-- the big 3 like playing for Sullivan, yinzers love a good Coach Daddy, and it keeps stability behind the bench. The bad news is, I don't think Sullivan's going to be a great coach for rebuilding (and boy if Sid and Geno hang 'em up at the same time, we're going to need to rebuild, regardless of what ownership thinks) and I don't think he's got another gear left for this club. It just seems really weirdly myopic to me. Why wouldn't you want that flexibility instead of just keeping a guy around for 5 extra seasons?
It's like the complaints about not wanting to try cheap young players because they might fail in the postseason, when we've had no success in the post-season for half a decade now and counting.