That’s not how Blizzard wants it set up.
Blizzard is not the arbiter of good storytelling - and the whole point for us being here is to provide suggestions for improvement. I certainly will not take as a given that Blizzard automatically has everything right - and I don’t think anyone here would agree that they do.
… and yes, I agree that PVP is by nature a lot more difficult. A big part of my critique is that the way they set up the faction war runs contrary to the motivations to participate in that competitive gameplay. I’ve watched lectures on why telling stories in PVP settings is more difficult, and what some of the ground rules are. I’m not ignorant of the restrictions - but I disagree with you that said restrictions preclude the inclusion of storytelling.
For more on that, I will again link this. It gives a window into the frameworks I use and the contours of precisely what I am proposing. A proposal for Warsong Gulch