Todd suggested group badges in a client meeting.
As the group achieves more success, it gets more badges. This is an impressive way to promote collaboration, allow everyone to specialize,, and build a stronger group identity.
But collaboration has a downside too. People want to get along. This well-intentioned goal can lead to people withholding ideas that might be at odds with the group. Social loafing becomes widespread. If everyone shares in the outcomes regardless of the who created the inputs, why create inputs?