A good nameplate addon does help a lot when it comes to multi-mob tanking, I use TidyPlates - Neon theme but I've used the Threatplate theme and it works just as well.
+1
I used this since Lich king. If there is one add-on a tank should have, this is it. Gives you great confidence when the name plates are all green. Sheer f*****g terror when they are all red