TankAddon

This addon creates a Units Frame of your party/raid members and visually shows their threat percentage in a red gradient growing upwards. If you're a tank, clicking on the party/raid member's unit frame will taunt their target. If you're a healer or DPS, clicking on a party/raid member will target their target (/assist).

I won't be updating this addon any longer, I am hoping someone from the community will pick up the torch!