Yup - looks like no.1 Novak; no.2 Fed; no.3 Murray; no. 4 Nadal. Will be interesting to see how Aus Open draw pans out - will hope for a Nadal/Federer semi draw - getting Nadal/Novak in the semis after the epic final last year would be a real shame. Add to that Federer being most vulnerable at HC slams these days - on the slow Aus Open court he's the easiest opponent of the top 4 so both Murray and Nadal will be hoping to be in his side of the draw.
Noledal matches are like games of Pong these days- boring. I hope they're in the same half in January so we don't have to suffer it as a GS final.