No, for this reason:
...we are entering a time where the top 5 players are all vulnerable in some way, either physically (due to injury) or mentally due to slumps.
If it was a matter of players improving and catching them, of course parity would be good. Instead, Fed is now slower, Rafa is now perpetually injured/tired/fatigued/harassed by drug tests/suffering from the divorce/forced to play in home country tournaments, Djoke is now on a Martin-induced walkabout, Murray is cracking under pressure, and DelPo is getting re-patched by Dr. Frankenstein.
2008 might have been the best year of parity tennis in the last few with Djoko peaking early, Rafa mid, Murray late, and Fed producing brilliance at the USO. Had Fed been healthy throughout, it would have been a great year for tennis.