I really enjoyed the previous 2 episodes being one-off self-contained adventures with deep philosophical meanings but we are back on a multi-episode arc to gain a new crew member. Again, I am just assuming that because this new character, Sanji, is featured in the opening song animation so I assume he is going to be a crew member. I suppose we will see. I actually thought it was Luffy in disguise during his first scene.
We are again shown the Marines to be cruel liars, and the captain character is especially rude & selfish. However, as the show progresses, it seems that most sailors are more or less villains. All we ever really see are Marines & pirates, and they are all, more or less, evil. This emphasizes what a revolutionary act it is for Luffy to be so filled with kindness & compassion.
Last note, I appreciate that they addressed scurvy & nutrition while spending long periods of time at sea. It is an interesting note in human history that the cure for scurvy has been lost & forgotten multiple times over generations passed. If we are thinking the One Piece world is a post-apocalyptic earth, this is just another time where some people have forgotten the knowledge of how to survive at sea.