I think it would be great to extend the naming convention in order to support multi-part movies.
This is useful for old libraries with CD1/CD2 splitted movies.
When implemented the library will show multi-part movies as a single one.
During playback when CD1 file is finished CD2 file is played automatically.
/The Dark Knight (2008)
The Dark Knight (2008) - pt1.mp4
The Dark Knight (2008) - pt2.mp4
Plex implementation of this feature: