serious wpvp died, when BGs were released, it is that simple.
And you were never able to do anything about serious druid/rogue gankers before anyway, which IS why rogue was the most hated class in vanilla, the funny thing is, a friend woulld be more willing to help, if he could fly there in 3 minutes instead of taking a taxi and slow ride three times that long...
but really, wpvp happens anywhere, where the objective gives it an opportunity regardless of flight, I remember tons of pvp when farming apexis in Blades Edge...