Here are the pots containing the countries from which the groups in SA were composed:
Pot Four: France, Portugal, Slovenia, Switzerland, Greece, Serbia, Denmark, Slovakia.
Pot Three: Ivory Coast, Ghana, Cameroon, Nigeria, Algeria, Paraguay, Chile, Uruguay.
Pot Two: Japan, South Korea, North Korea, Australia, New Zealand, United States, Mexico, Honduras.
Pot One: South Africa, Brazil, Spain, Netherlands, Italy, Germany, Argentina, England.
With this it's an easy affair to create 8 very different groups from the official ones in just a few minutes of card drawing.
Hope it provides an interesting variant.