Ranged classes including hunters have a hard time performing well in pvp due to the absurd amount of aoe cc in the game interrupting your hardcasts and elemental shamans suffer from the dispel mechanic as all of your flame shocks are gone with one dispel without any penalty.

With follow gone from battlegrounds you might want to do pve, world pvp and pretty much everything else than arena, then you can play almost everything for fun purpose and perform well when played properly. Add 1500+ arena to the equation and you have one class/spec left, guess which