Movie Sets: goods for shorts collections / movie extras?

For movies that are a collection of shorts, are Movie Sets a good way to display them as one movie? I rather not rename each short to match the name of the movie collection.

Also, some shorts are also included with a separate main movie. I initially thought I could create a set for that movie and just include the main movie and the short. But items in a set can’t be in multiple sets so I can’t have the same short in both the main movie set and the shorts collection.

And there are movie extras. I could include them in the set as well. Currently I use an add-on called Extras that shows a context menu item that will bring up a list of all items in an Extras sub-folder, but it’s hard to tell if a movie has Extras or not.

But I’ve also heard that movie sets are going away, so maybe I shouldn’t invest too much time in a dying process.