When waiting for more canon material, filler is nearly unbearable, but once a series concludes, its anime-only material can be revisited and appreciated.
Both the MHA Sports Festival and the Chunin Exam in Naruto included fantastic battles and character development, but one undoubtedly had more than the other.
Recently, the One Piece manga revealed that the members of CP-0 had recently awakened powers. Similarly, the time interval between each mention is shrinking. It appears that the series will show more awakened Devil Fruit users before it concludes.