Gotta agree with you on that part. I would prefer to just activate PvP when I wanted to, no matter what im wearing. I dont care wether PvP would be enabled 100% of the time or not, but a lot of people don't really like it I guess, but thats what PvE servers are for.
Maybe there will be something similar happening as in Tera. They changed the Open World PvP drasticly for the Western Release (removing a lot of restrictions). I guess you could hope for that, but I wouldnt get your hopes too high tbh. as there is more into the PvP then just killing others. Its more about rivaling factions (theres more then the 2 PvP factions).