Nadal is one of my two favorite players, but his butt-picking and face touching absolutely drive me crazy.
Yesterday, however, bounce-ovic out-did him with time wasting, average at one point 32 seconds between points. Nadal was "only" at 30 seconds!
And yes, there are other people who go over the limit, but Nadal is right at the top, with Novak about in the same place, and Murray ain't great either.
They have to leave them all alone and try to enforce the rules for the younger players who are not (yet) powerful enough to intimidate the chair umpires.
The stars right now are bigger than the game. If Fed wanted to take 35 seconds between points, they'd change the rules for him!