After watching a Pokémon Leagues analysis and rereading part of the Ranking the Pokémon Leagues thread, I have another one:
The complains about a battle being interrupted for some speech of the trainers in the battle of for people in the public. Some people argue that it ruins the pacing and tension of the battle, especially with Ash vs Paul and Ash vs Kukui that were the two longest battles and the ones with the biggest speech-time, but in fact, I think this is mainly a good thing: Having the trainers talk to each other shows how much they are involved with each other in the context that the battle is develops, meanwhile having other characters reacting to the battle shows that this is an actual event where all the people is expecting a result, and helps adding details that otherwise we would have ignored.
So, I think this speech time for the most part complements the actual battle, and it adds more value than some people gives credit for.