The series was finally piecing it together in the last film but the storyline was slightly underdeveloped. Fast five manages to resuscitate the series and course correct it into something more fun and mainstream. If you look at how far the series has changed along the way, it's quite impressive. Justin Lin has grown into the saviour of the series and the film benefits from the style he started developing in Tokyo Drift. The film is growing in cast with each new film and while Diesel and Walker aren't the only reason people turn up, the hole required to replace them would. The series is now having fun with the premise but the idea of this film series running 10 movies is absolutely insane.