With phase 2 beginning today, records have been reset and there is a penalty for adding players to a team. The practice phase has ended and now the fighting matters. You can still create a new team, you'll just have to earn the point penalties back, so good luck in your matches if that's the case! When phase 3 begins the teams will be locked and no changes allowed.

If a team does not enter an arena match that is starting they will lose points equal to the amount that would have been deducted if they had played and lost.

Will there be a new currency system in WotLK ? (Something with a higher value than gold ?)
We do watch the economy of the game but we don't have any plans of changing the current setup right now. [ http://forums.worldofwarcraft.com/thread.html?topicId=5974483232&postId=59734678567&sid=1#15Source ]