not the first time i see the 'best ever' after he put on a special performance, that's what i am referring to. Sure great start to the year, but he's skipped a slam and 3 months so there are simply not enough matches under his belt to make any kind of solid conclusion. If after 12 months after say 60-70 matches he puts up similar stats overall, then lets talk (about being better than his prime).
also he didn't reinvent anything really, as his game always had a lot of dimension and variety that he and coach decided to tweak several parameters, and suddenly he looks different. unlike many he can change from pure S&V when he won wimbledon in 2003 to a pure baseliner the next few years. obviously as he ages he's chosen to increase his offence even more in order to decrease his need for defence, which is at the moment paying off handsomely.