Tapping: All player spells which cause a creature to become aggressive to you will now also immediately cause the creature to be tapped.
It appears that most (if not all) passive damage-dealing buffs like Thorns do NOT tap creatures, so I don't need to worry about taking Thorns off immediately if a passing druid tosses it on me (I still won't use it). I still might modify the NiceTry addon (which takes off a hunter's Misdirection on you) to only allow a few specific buffs from players on me. It should be easy to modify.
What might be harder is an addon that won't attack on a right click. I've been trying to open quest objectives with my back to them, so if I click on a mob my attack will fail, but an addon would really help. I nearly killed a chicken doing the CLUCK! quest, because you click on it to turn in the quest, but it can turn back to yellow without warning if you take too long, causing your click to kill it. Luckily, my back was turned...