Boba Fett movie should be both a prequel and a sequel
Most people would expect the Boba Fett movie to be a prequel, but what if it was also a sequel too where it leads to the events of Return of the Jedi? Then the film goes all expanded universe by having Fett somehow survive and escape the Sarlacc. Then it goes into the comedy realms of the EU my brother told me about where supposedly Fett has a ongoing fall into the Sarlacc and trying to kill the Sarlacc routine going on.
Then by this point Han Solo has became a general and really made a name for himself. Fett will seek revenge by ending the legacy of Han Solo, however his only plan was to fight Han head on and win. Considering we know who made it into Force Awakens, it's rather obvious who wins the fight. Though this time the battle will have Han destroying Fett's iconic armour piece by piece until there's nothing left but a regular looking guy. Then Han will say something like "you survived the first time so I can see you die this time" or possibly "get off my plane" before Han knocks him over and back into the Sarlacc. Then the ending can surprise people first by having Fett survive the Sarlacc only to find himself getting killed by Han Solo and the Sarlacc all over again.