The one thing I LOVED that they did with BW series. They made Team Rocket less of a joke and more of an actual THREAT. They weren't in every. Single. Episode either. They weren't just like some screw ups. They actually almost accomplished their goals and actually took time to plan hints before they acted. They didn't just show up and "we're here for your Pikachu!" Ash:"No!" Insert pointless typical battle BOOM! Blasting off yada yada. They actually had plans and just came across Ash and the others randomly. After that season. It was back to their old terrible habits of showing up when no one cares. Not even the slightest threat.