Only a couple of days to WoW Hardcore launch! Played on PTR as a frost mage which is probably what I'll do on live. I can certainly say permadeath (technically you can xfer character if they die to regular servers) changes the way that I level. Had a couple of near death experiences and even saved a couple of players from overaggro certain death. Just gotta stay away from overtuned mobs from certain quests. Blizz has data that the Kobolds kill more players than any other mob so far though they are rather low level. I personally hate fighting the Defias Brotherhood in the hills in south Westfall so I just avoid the southern area altogether. It's been rather fun since I'm not just chaining dungeons together to level and instead re-experiencing old quests. PTR was also good practice for when it goes live.