First off, Read the manga. If you don't read the manga, then you should eventually read the manga. If you don't like reading then -I don't care READ THE MANGA!
During a month only 4 episodes come out.
Not only do those 4 episodes take forever to come out like any airing anime, but also One Piece takes forever to get to the point. Every Intro is 5-7 minutes long, this consists of the opening &