Looks pretty good.
Any ideas as to how you'll implement this in your interfaces or addons? Personally, originally I thought just a single number that goes to 3 and turns red when it's at 3, but seeing this, it'll have to be something more epic. Perhaps something that adds a golden glow around the player frame when you're at 3 stacks.
![Big Grin](//cdn-wow.mmoui.com/images/style_mmoi_wowi2/smilies/biggrin.gif)