PvP in this game has always been designed and balanced around the ceiling of what jobs and players can perform. It's never going to feel good in any mode when people are playing with their elbows and giggling about their free EXP.

If you don't want to play on JP, then just look at their PvP section of the forums. They spend their time giving gameplay feedback rather than bitching about premades and shotcallers. They seem to embrace them, rather. Should tell you all you need to know.