[Dr Kain]

My biggest problem with the anime version of the Water 7 arc is it dragged on for an unnecessary amount of time. Having 5 clip shows in a row and then interrupted with some stupid Boss Luffy crap in the middle of a battle is just utterly annoying. Add on top that the recaps seemed to have gotten longer just to slow things down (there is no reason the train ride to Enies Lobby should have taken 9 episodes), and you have one of the longest anime arcs for no damn reason.

Sure, the story itself is by far the longest story arc in the entire series, but the entire thing runs just short of 100 episodes.