Legion Note: Well, it was good while it lasted! I've moved on; I'm quite happy using the threat display on nameplates and the default unit frames..
Tidy Threat is/was a threat monitor which is simple enough for a new player, and powerful enough for a tank.
Operation
If you're DPSing: Don't go into the RED!
If you're tanking: Stay in the RED!
As you attack on an enemy, the statusbar grows upward indicating your threat. If you reach the upper mark on the thermometer, the enemy will attack you. As you continue to gain threat beyond the aggro point, the bar will continue to rise, indicating the amount of threat you'd need to lose for the enemy to attack the next highest threat.
No mode changes are required to switch between Tank vs DPS; The interface is dual purpose. For additional data, players can enable the "Detail Window", which will display real threat numbers. Type '/tidythreat' into the chat window to bring up the configuration panel, or right-click the Tidy Threat frame.
Bugs and Feedback
Please leave bug reports and feedback, such as feature requests, in the Ticket tracker on Curse.com.