I think this could need a MASSIVE amount work, but I think it would me a major improvement for Plex users.
Currently programs like Plex Media Server are inotify-aware; this means that the server knows if (and which) a new file is uploaded in the directories it monitors.
If there is no inotify notifications, it is necessary to manually force library update after you have uploaded the new media files.
Library updates use a lot of CPU power and a lot of bandwidth; with big libraries this could even lead to 24hrs-ban for GDrive.
If rclone could inform inotify of a new file added, this would be great, because Plex would instantly be informed and it could automatically add it to the library, without having to make a heavy library update.
I've checked the Plex APIs I've found but there is none regarding adding content; they are mostly about playing and getting info
I've looked even into Python-PlexAPI but found nothing about adding a file to already existing library; I have just found the update() method which scans all the library.