Electronic Software Association (ESA) top executive, and most recently E3 lead organizer, Mary Dolaher, has resigned and taken up a new position at IDG World Expo, organizer of numerous tradeshows such as MaxWorld and various others around the world. Not skipping a beat, IDG today announced it will be organizing Game Pro Expo in Los Angeles' Staples Center, the former E3 location, October 18-20, 2007. The new show will will have trade, consumer, and game competition components, comparable to the Tokyo Game Show/Liepzig Convention formulas.