Relevant addons:
Button Facade: Caith
Dominos Action
Omni CC
Omen 3
pMinimap
Power Auras Classic
Quartz
Range Display
Satrina Buff Frames
Tidy plates: Threat Plates
TipTac
Xperl Unit Frames
Its not quite as polished as I would like, but I'm rather proud of the Power Auras setup I have. As you can see, Aimed Shot is ready to be used, Chimera is on CD, and Serpent Sting is applied. I also have another pulsing aura (with sound) when Kill Shot is Usable. I took this SS in Aspect of the Viper, and with Trueshot Aura off. There is also an aura for Aspect of the Pack, Exploit Weakness (T10 2pc bonus), and various other things like Necrotic Plague. This shot looks a little cluttered but obviously the 2 auras on the right aren't there 99% of the time.
The Quartz setup from top to bottom: Swing (shot) timer, cast bar, and GCD.
Most of my rotation fits into 2 buttons + modifiers on my mouse. Traps, pet bar, and a few misc. bars are located off to the side with important functions keybound.
The last interesting thing to note are the numbers just to the left of my target frame, this is Range Display. Its simply an estimation of the distance to my target. It also works for focus and mouseover, which I've found useful for other toons.
I'll probably be dropping Xperl in favor of another unit frame mod soon. It doesn't look good at all, but it does get the job done. Raid frames are positioned along the left side with groups 1-3 just above my chatbox, 4 and 5 sit above the other groups.