Collective problem solving over group voice communications is a universal skill. Our dev team got really good at it when we all started playing Counterstrike to

Collective problem solving over group voice communications is a universal skill. Our dev team got really good at it when we all started playing Counterstrike together. MMORPG raiding would be a good place to learn this as well. If nothing else, they'd be guaranteed to learn proper etiquette by learning what not to do.