As if this were not bad enough, the way HoTs generate aggro/threat is a nightmare. Since most healing is via HoTs, healers will generally try to keep HoTs on their group members at all times. Some of them last pretty long. This means when a battle ends you often have to stand around doing nothing while you wait for the HoT to expire. Why you might ask? Because if you don't, as soon as your tank/dps/puller pulls a mob it will immediately attack your healer once a HoT tick kicks in. Yes, you can manually click off the HoT, but the icons become very, very small once you get into your 30s or 40s, and you are just as likely to click off an important buff as you are the HoT. This system is horribly designed to say the least.