The defending probably hasn't dramatically improved, just that now they don't have to defend as much due to the team as a whole endeavouring to attack
He's doing brilliantly, and long may it to continue. I'm loving the guy so far, and right now I wouldn't want us to appoint someone else. But I still haven't changed my opinion: there's no reason to rush anything. Just continue as they are.
And let’s hope his methods continue to show the outcomes we are getting used to. What I would say is I would be happy for a 10+ game run which (hopefully won’t) might see a couple of defeats and from there we might get the true picture as to his reaction along with the player’s attitudes in such a circumstance. He’s doing so well but as others have said to rush now might backfire in the cold and long weeks of winter. SR must realise that they have a poor record in appointments and hopefully will, in time, make the right decision. It’s all to play for.