Ive been into the films since they began in 2001. Like you though, i kind of thought it would be short lived especially after 2 and 3 (although 3 is underrated). I like them all but i am enjoying the fact that they are expanding it by adding different characters and making it more than just about car racing. The additions of the Rock, Statham, and Jaa is a lot of fun. I believe this film is the first to bring Lucas Black (Toyko Drift) back into the series after so long but its cool how they tie everything together. I think that if you choose to watch them definitely start from the beginning otherwise you might get lost in the story.