Might wanna try
Magic Targets 2 it gives a group of bars showing all the raid targets and if anyone is tanking them, thier CC'd, idle , or untanked by color of the bar. Its syncs up with magic marker also to show raid target symbols, all in all a pretty nice mod. If I can find some time I was gonna see if I can work this into the info panel don't know though the list could get pretty big in certain situations