My only gripe for this episode was it's another late development for Brock. It's such a shame they displayed this after the league instead of before then. When I heard of this episode the first time, I thought he would be healing Ash's Pokemon who were injured by their battles against Paul and Tobias. Especially Tobias where my thoughts of him being a relentless trainer wielding Legendary Pokemon got shot down as him being a nice guy instead. *sighs*
Oh well. I did enjoy this episode as Brock's greatest development. Although his 2nd special is under way, I do miss the guy and wished that he was treated better.