Harry Potter also finally figured out they could tell the whole story of the final two books instead of condensing it into one book per movie as they had been. Too bad they didn't figure that out earlier.

Very few series can get away with that even the best books LOTR is one example.

Naruto is gonna milk us for a long time yet. Just look at Dragonball. They STILL have Dragonball Z games coming out and that series has been on repeat for how many years now?