[vbat99]

Does MC support moving files across drives?
Say I want to move highest-rated 250 movies that are scattered across C, D, and E drive to F drive.
How can I achieve this?

- No sub-folder for each movie
- Many movies have external subtitle files
- Use a central Actor thumb folder and a central Movie Set Artwork folder

No, MC does not support moving movies between root folders, or different drives.
For one, I, and I mean MediaCompanion in this, do not want to be responsible for loss of data, which can occur.
Two, how is MC to know which root folder or drive the movie belongs to.
Three, It's not MC's responsibility to organise or re-arrange files.

Media Companion is a Scraper for XBMC/Kodi first and foremost, with some folder and file renaming functions. Moving of Movies across Root Movie Folders will not be incorporated into Media Companion.

Not sure what you are asking in regards to No sub-folders for each movie
I use to be of mind that keeping all movies in the Root movie folder, not in their own sub-folder, was a good thing.
But, I found two issues.
1. So many movies in one folder, really slowed down Media Companion during scraping for new movies, as well as general operation.
Once each movie had it's own sub-folder, MC runs blazing quick.
2. Scrolling down through five or six hundred movies in Explorer was a real pain in the a$$

?? Many movies have external subtitle files.

Use a central Actor thumb folder and a central Movie Set Artwork folder
Already possible. Just set up the actors in Preferences -> General & Common -> Actors tab.

Central MovieSet artwork folder, Preferences -> Movie Preferences -> Artwork tab.