Druid for lyfe?

I had a dream. A dream where there was always a NPC druid on your side for 5 man instances, or for pvp with 3v3 or 4v4, or 5v5 arena options? For example, if there was the ability to switch players out of combat, and other into combat on a dead ally? Or how about only having 1 tank, 1 healer, and 2 dps, and an NPC druid to run with? Just a thought, discuss!

Only if its a Troll Druid, even for Alliance.

Terrible idea otherwise.