If you want something built around PVP, why not play another game? The majority of players like the fact PVP is a side thing that doesn’t interrupt or isolate people from the larger story as a whole. Including fates and beast tribe quests in a PVP only area just will make things feel more elitist and there would be pressure to join such a thing.

PVP - with people who love camping spawn points and fates just to be jerks - breeds a toxic community with people being resentful of each other. Overwatch is proof that it breeds a toxic community. I love FF14 because it avoids that.