Did Oda ever do any filler character designs before this?
He designed the Movie 4 & Movie 7 characters
Brand New World was the worst opening.
The song is great to listen by itself, but it just wasn't anything compared to all the others.
People have been saying this about every opening since Bon Voyage. For the record, while I do somewhat like all of the opening songs, Believe anoyed the HELL out of me. It was on way too many episodes and sounded too much the same (also, I don't really like techno music that much). Guess what though? EVERYONE THINKS IT'S THE BEST SONG EVER! >_>;
As for the spoiler scenes in the opening, I think they should do it. But I also like the random stuff they do in the other openings so…(EVERY ANIME OPENING spoils things from the manga).