OP, I been hoping for Large Open PVP zones since Beta, not these canned hunts that's called PVP now.
We know STO can have large zones, just look at the Nopada Desert.
Have two factions have camps (safe spawns) on either side of the zone, with various objectives for players to do across the zone with a centeral area being the focus for the PvP. Say a Fortress, a dungeon, a village, etc. So players have the option to fight for a cause or just go out PvPing for the sake of PvP.