Need Creative Ideas For My Concept!

[Mischback]

In Raid-Environment there are quite some moments you might need target's power, though. Thinking of Deathwhisper (2nd boss ICC), Saurfang...

Anyway, loving your concept!

I'm a warrior-tank, so I would want both, health-bar and -text on my player-frame. No need for power-text, though. But when I'm on my Resto-shaman, mana is crucial, so I think you will need to apply both.

I would go with your HP-bar-concept for player, too, but add a percentage-text atleast.
You could make a "big-bars-only" approach for power, with text. You could size them smaller as the hp-bubbles.