I have a feeling Cooper is trying to be clever at the moment.
Why suddenly change from a solid looking 3 4 3 to a very flakey looking 4 2 3 1?
He is exposing our weaknesses at the back, particularly at full back and the midfield does not look anywhere near as dominant.
The timing for this change is just in time for the new year sales.
Cooper is probably sending Murphy a message and highlighting how threadbare the squad is, 'you have had a taste of what we can do, if you want some more, buy me some players"
We are certainly not out of a play off push, and the closer we get the more pressure there will be to get there; we need to strengthen just to have an outside chance though.