I have a lot of respect for Hyypia so I'm still not sure binning him is the underlying answer to our problems, though his inflexibility and idealism in persisting with a system virtually no one else plays looks like it could be part of the problem.
But regardless of that, I'm still sticking with the idea that it's the players who have to go. Bennett is a nice start but I'd like to see at least half a different team come January cos this current one is taking us down.
Bennett? Depends if you want a left back who can defend.
Agree with the rest of your post, particularly the inflexibility, that is what could put us in trouble, coupled with poor team selection.
If things haven't improved by the international break, then it will be time for a change.