Changed it a little, actual health bar at top w/ abbreviated debuff type, and an idea of how to display debuffs:
Purple line = druid002 is cursed, blue line = druid003 is magic-debuffed.
Just some ideas for you Maia, feel free to take this stuff and do whatever. Depending on what font you use, you can make these frames even smaller...I used Myriad Pro above, but Myriad Semibold Condensed is...well, condensed!, and shaves off like 30% of the width. It's a little less readable though.
And Kimat, can I just say your idea to show health deficit in 2 digits is absolutely brilliant? ;)