Honestly. Lets look at this.
Federer is playing the best tennis of his life right now because of the way he's figured out to play on slow surfaces. He is much better now on the slow courts.
Nadal is losing his edge a little. Nadal is unstoppable when healthy but he's not beating federer on hard surfaces this next year in majors I don't think.
Djokovic? What can I say about this clown. He will get put in his place sooner or later. Yeah he has what 4 majors now? I don't see him hitting double digit majors. He will win about 8 majors total.
Other guys like Tsonga are stepping onto the scene. I think he could win one next year.
Murray? WHen is this guy going to win his first title? It's going to be when everyone least expects it. He doesn't handle pressure well.
Federer is going to go into this Australian so fresh and full of confidence. I see this guy making an absolute epic run in the next 2 years, winning 3/8 majors