World pvp in an mmorpg? of course yes, inevitable. But let it be a regulated world pvp, you'll see how.
*Invasions to capital zones, rewards for killing zone rulers as well as rewards for defending
*world events in a zone "X" where an immortal world boss appears, that many people are needed, and that only the clan or "party" that gives the last hit or the core that does the most damage, has the loot, the rest only the experience obtained.
*There is a lot to do, a neutral "pirate" style faction that is dedicated to robbing other players, or killing other players for rewards, would also be nice to see.
*1v1 or 3v3 tournaments at the highest level for rewards, titles, whatever
*Housing / Castle Housing (otherwise a house for a Guild/Clan) That other guilds can attack
*It would also be good that in the areas where the opposing faction can attack, there is a kind of queuing to defend those areas, that one can register to defend and be aware of the attacks and of course there is some kind of "token "or reward for those who take the work and time to defend the attacked places
As well as a queue for those who want to attack, form groups to invade enemy areas, etc.
I can think of many more things that would be good to incorporate in an MMORPG of this style and that would be very good to see!!