Murray, Djokovic, Nadal, Raonic, Nishikori and Wawrinka are in bad shape and maybe some of them will not participate.
A.zverev is not yet ready to win a slam tournament.
So Federer ,I think, he can win again this year and get closer to the first place in the atp ranking.
Yes I'm really looking forward to the Australian Open, finally we have tennis back in Australia. Federer is strong favorite as most of his rivals have injury concerns or have not played for some time. Its most likely that Federer will win for the second year in a row but I would like to see Nick Kyrgios maybe challenge for the title as he now has a coach and he seems to be much better mentally now then previous years. So I hope he can go all the way.
He wasn't exactly in good health as he asked for a medical timeout and then after that dominated the match but that is to be expected when a competitor such as himself gets that far into a competition such as this one.
Alot of those top players are missing this time around due to injury so I would go with Federer to win it again this AO tournament.