With few exceptions, most sequels are generally regarded as inferior to the sources that spawned them. Worse still, are the prequels that derail or retcon the stories they are intended to introduce.
The culprit is often a disconnect from the themes of the original story or a total disregard for the trajectory of the characters, actions and the events that shaped them.
Here on Canon Fodder we extrapolate the "Causal Trajectory" (TM) of the stories we feature and present the logical extension the original narrative set in motion.