"One Piece is the story of a boy named Monkey D. Luffy [...]" Naturally. And since OP is a shonen series it's a given that its protagonist is a spotlight whore. The events before the time-skip in particular centered around Luffy and Luffy alone. (which wasn't necessarily a bad thing. It was Luffy's belated character background arc(s)/saga and proved that he is a rightful protagonist.)
Now my impression is that all the other members of the Straw Hat crew kinda dropped from the stage after their respective character arc and especially in the current arc some members seem to be shown just for the sake of showing them. (like Franky for instance.)
Of course you cannot give everyone equal attention all the time but still... Do you guys have the same impression? Which HS does get too little spotlight time in your opinion?