Since I think Open Pvp would be to crazy and people would just kill you while you're mining,fishing,etc....

I propose a Duel/Spar system like Dc Universe Online has, Invite a player to duel and then you can pvp within an enclosed space.

There will be option to ignore all duels or you put an icon next to a players name indicating that person wants to duel and available to duels.

Just think it would be fun to duel/spar in open world and get people into PVP- playing the game longer and having more things to do in game.

Posted video as an example:https://youtu.be/v5PrzqlxRP4