We've been playing 4-4-2 for weeks now. But I agree on Seve, apart from him adding more bite to midfield, the competition for places in central midfield might give Kerr the kick up the backside he needs.
I personally don't see the point in replacing the manager after 6 games. Any new manager coming in now will only be polishing the same turd. Why not see if Calderwood can turn it round? If he can't, then get somebody in before the January transfer window.