Obviously, playing baseline is not going to work against Federer, so what are you going to do? Why not try SV, or even better, mixing it up like Federer? Will it rattle Federer? Probably not. But hey, at least it gives Federer something different to worry about. It is not SV or mixing it up that is ineffective against Federer, it is the lack of quality player to execute this type of game plans, that is the problem. How is it so inconceivable for some of you to recognise that someone of Sampras calibre may present problem for Federer. If you can recall, a little known Suzuki did give Federer a few scare in two of their meetings recently. Like Sampras said, if Federer can pass him at will in 3 sets, you just gonna tip your hat to Federer and say too good.
Due to his dominance, Federer may single-handedly mould the tennis world into adopting complete playing style for the future tennis prodigies.
By the way, just curious, for the Federer fans, who in the past is capable of beating Federer. From the looks of many of the responses so far, it seems that Federer is unbeatable.