I know, I also play exclusively in pvp areas, but that is not "open world pvp" in the sense that there is no purpose in keeping that instance switched on.
It would be cool if they created 1 planet where a total war rages and strongholds (not in the sense of housing but in the sense of fortress) have to be conquered and defended in order to unlock other areas or to gain additional faction-based buffs (such as "if you control this fortress your guild or the entire republic enjoys 5% command exp bonus). This would be open world pvp as I consider it. And in Star Wars, which is probably the most polarised good-vs-evil franchise, this should be a must imho