With the switch to TMDb we are seeing more people running into the issue of short films polluting their regular movie lists. I would like to see a new Shorts Category that separates them from regular movies. Pixar is a big group of those for me.
The Academy of Motion Picture Arts and Sciences defines a short film as “an original motion picture that has a running time of 40 minutes or less, including all credits”.
Definitely Pixar is good example, also I check with TMDB and it is not possible even to define them as a collection. So the options are to link each file to the single short movie entry in TMDB having them wherever in the library or linking to the Pixar Collection entry appearing as many duplicates.