I think Andy is going to be full of confidence going into AO. He has been battling Djokovic hard this part year, and their rivalry has really taken centre stage. In fact it was their AO semi that was prelude of things to come, Murray played so solidly in that match and put on a epic battle - One of my favs, and that third set was one of the most brutal sets of tennis I have seen.
I do think he would want to avoid the Joker, as would anyone else on this surface. Novak is the man to beat, and is the man in Melbourne until proven otherwise. At his best, he mows down the draw ala 2011, even at lower level, he beats his opponents who are battling their hardest against him and outlasts them ala 2012.
Federer is the one who need the luck of the draw, since I think he is most vulnerable to a quarter final upset than the other two. Berdych is probably the guy he would want in Joker's quarter as well Murray in the other half.
I don't negotiate with trolls, I put them away.