I certainly will not be playing this mode, not a fan of pvp. I prefer working together than working against each other. If a strong line is drawn inbetween pve and pvp it would maybe be fine but seeing as they are going to be next to each other in a way, the game could start being balance for pvp and start ruining the pve.
Hey Reeper, you should tune in tonight to get a look at the gameplay Even though it's a head-to-head game mode you are still fighting together with your team to defend the rift. It really has that vibe, there's just additional danger and chaos and fun thrown into the mix from the opposing team.
I think that even if you don't like PvP, the mode will add a lot of replayability to PvE. After a while of playing the same maps where everything is always the same, it can get boring and feel very grindy.This mode will enable people to create way more dynamic matches.