Cat Druid, Beginner's Guide, Raiding, Warrior Tanking Guide, Blue Posts, Daily Blink

We've just released a free update for the World of Warcraft Mobile Armory. The noteworthy additions include:

• Support for World of Warcraft: Cataclysm, including new items, goblin and worgen races, and new race/class combinations.
• An updated look: the Mobile Armory has been reskinned to match the new World of Warcraft community site.
• Various UI improvements, including enhanced readability and streamlined character switching.

The World of Warcraft Mobile Armory App is available from the App Store on iPhone and iPod touch or at www.itunes.com/appstore. For more information on the World of Warcraft Mobile Armory, visit our Mobile Armory page.

iPhone and iPod touch are registered trademarks of Apple Inc.

Dungeon Finder and Gear Detection
We would love to implement better ways for Dungeon Finder to detect if players know what they're doing in dungeons beyond just the gear they've accumulated. We have some long-term design goals in mind for this we're not quite prepared to share this early on though. (Source)

Why did we die?
One flaw with the current system, is if players fail in a pick-up group, they aren't told why they failed. People then tend to play the blame game, often directing malice at the healer(s).

So while I'm speaking more about class roles, I think the idea still lends itself to your question. It'd be helpful to get more information than just through trial and error. Groups could benefit if they knew they didn't wipe because the healer didn't manage mana well enough, but because the DPS wasn't high enough, or boss adds weren't properly rounded up, etc. (Source)