Fed might play for another 4 years?
I wouldn't know really. For me there are very little exciting players coming up. I don't like Tomic, Harrison is boring, Raonic is too one-dimensional, Dimitrov is overrated..
I like Kohli, Haas, Nalbandian, Youhzhny...but all these guys will probably retire at the same time as Fed. So might be abit of a dry spell from tennis for me.