I have a feeling PVP will see a bit of a revival when large scale battles are released. PVP is usually some what of a niche crowd in most MMOs. The problem is SE has it in the extreme scale (Arena 4v4) where most people even are in the casual scene, and enjoy the big battle objective fights. I enjoyed some PVP in WoW, but haven't touched it in FFXIV because of this honestly. I even did some Arena in WoW, but don't plan on it here in FFXIV unless the future large scale battles reel me in more.