1. It would be nice to find a code that will allow me to get zero gym battles so I can start over again and train my weaker pokemon. But im sure that will glitch the game up and restart old events.
2. A code for rebattling palkia/dialga, the 3 birds, the 3 spirits (azelf, mesprit, and azelf), heatran, giratina {probably would glitch up game since you would have to enter the distortion world again}, shaymin, darkrai, rotom {even though you can breed him}