People tend to be more toxic on PvP servers. Even if you start out like a nice person, the continuous unfair ganks, corpsecamping and griefing will eventually consume you. Then you will start to do it yourself. That cycle repeats until the whole realm is bitter and toxic.
Therefore I only tested up to level 10 on launch. Less bugs than several other private servers I played on, only the rollbacks bothered me. Looking forward to the PvE realm, but the hype slowed down a bit. Hopefully it releases soon (not Blizzard soon

)