I still wouldn't rule Australia out completely - mainly because the last time I did that they won 5-0 and I looked like a bit of a muppet - but I do think that they will struggle to win a 5 test series next Summer.
You imagine the personnel needed for the tour - seven batsmen, an all rounder, two keepers, five seamers, two spinners....
Well, the seamers will see consierable competition for places. If they are fit Siddle, Pattinson and Starc are shoe ins and Hilfenhaus will probably travel as the "safe bet" whilst the final slot will be hotley contested between Cummins and Harris (if fit), Johnson, Bird and Hazlewood. And there are two decent keepers in Wade and Haddin...
But there it kind of ends. Only three of the batting places are "taken" - Clarke, Warner and Watson (again if fit) - the spinners all share an inability to turn the ball and there is no real standout all rounder (I suspect Maxwell may do this and second spinners duties myself)
Yes, England have some selection issues themselves - but they amount to which six of eight batsmen to go with and who their third seamer might be...