I have read a few times about turning on name plates for multi-mob tanking situations and can certainly see how that can help. What I am not a fan of though is how big the frame itself is. Does anyone know of any mods that manipulates this frame?

For those that don't know, name plates hover over mobs/toons heads and displays their name and health. I believe the default on/off toggle is shift+v or maybe just v. The interface allows three options under the targeting section: show all, show friendly, show enemy. At least if you turn on enemy you don't get "spammed" by seeing everyone's.

Aloft is what you are looking for....

Second the recommendation for Aloft. It's an Ace mod (easily updated) and offers the most options for configuration of any of the couple of mods I've tried.
I'm using it currently.

Files.wowace.com to access it on the web, if you don't already have one of the Ace updater apps.