I may investigate how to do this myself, but I currently have no skill/knowledge of code/lua/using Ace libraries, etc (thus its much easier to request it instead :p )
My first thought for this was as a combo point counter, but it would be helpful to have other things counted as well, such as stackable buffs/debuffs, such as poisons/sunders/etc. Not sure about everything that can/should be displayed, but if all else fails, just a combo point counter.
Anyway it would be nice to have the following options, possibly with some modularity to fit it all in
Display as points or bar with optional text display
Radial or linear display with adjustable radius. I'm thinking four basic layouts: linear points, candybar-style bars, radial points, pie...shaped...thingie.
Skinable, allowing for interchangeable textures for the layouts, like Surfaces textures for a linear bar, and textures for points (like generic dots, or runes)