Are We There Yet? -- Group Achievement Tracker
This AddOn was designed to present players with a list of achievements that can be completed in a specific zone. It has achievements from 5, 10 and 25 player dungeons, PVP Battlegrounds, and Arena's.
When you enter a zone with achievements being tracked by the mod a third tab will be added to the default achievement window. When you click on the tab you should see a list of all the achievements that can be completed in that zone. When you click on each achievement you will see the completion status for each player in your group on each achievement, in addition to the standard detail and tracker features that the default UI provides.
The mod is a work in progress but the basic functionality is in place and I thought others might find it useful to see which achievements their group can tackle without having to tab out to the armory and search everyone individually. There appears to be a limitation in the API (or my understanding of it) that requires a small distance between you and the members of your group when obtaining their achievement data. Manually targeting players appears to have a larger range than my automated scan of each group member so it is a decent work around for out of range players at the moment.
If you have any feedback, bugs, or achievements for a zone that I missed let me know and I'll get them fixed. This was my first lua AddOn so I'm almost certain I'll be making a lot of changes over time to improve the mod as I learn more.