Currently i am using the 2.0 Version of Statusbars from Curse (http://wow-en.curse-gaming.com/files/details/5209/statusbars-2-0/). It is doing what i need (showing only the bars with a big combopoint indicator) but lacking one functionality. I would love to see the amount of Deadly Poison charges on my target in the same fashion as the combo points. Eventually as a seperate frame or attached to the combo point display.
Edit: other stackable poisons/spells like Wounding Poison would rock :D