You'd definitely need the time at your fingertips! I reached level 16 today, then died due to an untimely and very unexpected respawn just as I finished killing something else... and now I'm going to go torture myself with a hardcore Minecraft playthrough instead. xD Woo.
What type of griefing stories have you heard?
I didn't experience much annoyance other than the annoyance of "too many people." Although... I did almost get someone killed when I Sprinted out of a cave when I accidentally ran into a rare. xD But then I also saved someone's life too with a well-timed gouge. Felt pretty epic about that, tbh.
Mostly groups og people doing dungeons then leaving and hearthing as soon as they pull a group, leaving the lone tank to die, and similar stories. Organised griefing mostly but I've also read updates on those stories and it looks like people are getting banned for it.
I do have to give it a go one day. Hopefully they keep these servers open for a long time.