I don't know if this already exists, but It would be nice to have a function that automatically move movies or episodes to another location just after watch or regularly check watch status, this is because I'm limited in space, and I need to know what I can delete or backup because I already seen it.
There is an option in the Server Settings that will allow clients to delete things from the Plex/Web interface. You could always watch something and then delete it from with in plex once your done
