sArenaTargets prints in chat who your arena team targets during an arena match. It also prints who the enemy team targets.
This is actually a half finished project. I was going to have the addon create classcolored bars I could attach to my unit frames to indicate who was targeting them on the other team. I never finished the bar part so I thought I'd upload what I did finish in case anyone thought it was useful.
Feel free to use any of this code for any of your own projects.