The transformation of a villain is pretty much the staple of your average shonen series. Frieza had a ridiculous number of them, and Luffy has faced this a few times with his antagonists. Eneru and Rob Lucci have done it before, but this gigantic metamorphosis reminds me a lot of what Gecko Moria did after absorbing all those shadows. For every action your hero needs an equally impressive reaction. I can't wait to see Luffy finally deflate this giant gas bag. I'm betting this attack is going to be the Elephant Bazooka.
The emotion and drama Oda builds in this chapter is borderline inspiring as Usopp gives his speech as to why the crew follows Luffy, and he even mixes in some nice laughs with Zoro running ahead of everyone else while carrying Tashigi.
Can't really find anything worth mentioning. Yeah, the cliffhanger of Luffy's attack is a tad frustrating, but you know the payoff is going to be epic.
The arc originally had me a bit confused, becasue Oda seemed to have broken the chain of events that he's best known for. There haven't been any extended, multi-chapter battles between each of the crew, and no lengthy flashbacks. Things have been kept pretty tight, and while I was a tad underwhelmed at first. I later found this pace refreshing. How can you blame the creator for wanting to change the formula on you now and again? I can't wait till next week.