A different brand of challenge is presented by the PVP, which has undergone multiple phases and metas throughout the game's long lifespan. As in any competitive live game, some classes will be a fan favorite criticized as overpowered in one era only to be left behind in the next. The team says this is one of the main reasons it chose this specific iteration of WoW.
The primary goal of Conflict and Strife is to provide an interesting choice in PvP by allowing access to an extra PvP Talent. It’s not necessarily going to be a strong option for PvE. The acquisition of this Essence is via PvP, and is totally optional for PvE-focused players. While there may be interesting PvE uses for some of the choices, it is not expected to be a strong competitor on usual PvE criteria (like total throughput) on every spec.