Hunters are just fine in PvE, not brilliant. Raid leaders won't give you the priority over the other dps classes but won't ditch you either.
Our secondary legendary weapon is a one hand melee one. sword, dagger, spear, etc
What can we bring to a group? Distant dps. Poison cure (not much asked), a punctual mez (distracting shot on Shadow t2) Tracking skills and campfire regen ( Barad guldur)
Other than that we are not that much useful.
As for Pvmp I can't help you.
Lvl 85 Hunter - Lvl 85 Champion - L 65 Captain