I didn't see a thread on this, but this line to the ptr patch notes really has me intruiged. It seems to be aimed almost exclusivly at situations where a healer or someone refuses to leave an arena and is able to 2v1 an enemy team. ( since I feel this happens most in 2s)
Source:For Arena matches lasting longer than 15 minutes, one of the teams will receive a buff called "The Crowd Chose You" that increases damage, critical strike chance, stealth detection, and reduces damage taken. The buff is awarded based on the following criteria.
Team with the largest number of players alive.
Team that brought an enemy player closest to death (lowest health).
http://us.battle.net/wow/en/blog/101...Live-6_20_2013
Personally I like this but would love to hear other people's thoughts on it.