What's a movie sequel or remake that really didn't need to exist, but you're really happy it does?

I'll go with the film that prompted this question in my head- Toy Story 4.

Toy Story 3 resolved all the plot threads of the prior Toy Story films in a satisfying way, and is easily the emotional high point of the film series. It could not have wrapped up the story more perfectly. Its the perfect finale. It's so good, it became only the 3rd animated movie ever nominated for the best picture Oscar.

And yet, despite no one asking for it, Toy Story 4 exists. And yes, while it is the weakest of the series, thats not a fair comparison considering the prior films are all essentially perfect movies. Toy Story 4 in its own right is an amazing film, with some great new characters, and yet again, a touching and emotional story. It doesn't reach the emotional heights of Toy Story 3, it doesn't NEED to exist, but I'm damn glad it does.

What other movies can you think of like this?