Prevented/made goals? Our shape would have been different, the midfield would not be compensating for the lack of pace at the back. He was also a presence at set pieces.
Injuries? You're taking the cunt with that question.
The sheer awesomeness of Hutchinson would deflect from McCall's ineptitude in the dugout.
My first point is valid, of course Hutchinson has fuck all to do with injuries or team selection, but I do think he's a bigger miss than you are making out.