One feature that would be great to have in FileImporter (and exists in MTC!) is removing {{Copy to Wikimedia Commons}} from the source file after the transfer is complete. While it does add {{Now Commons}}, there's a backlog in removing files that are now on Wikimedia Commons, and the files are kept in Category:Copy to Wikimedia Commons in the meantime. Has this feature been considered?
Topic on Help talk:Extension:FileImporter
Thanks for bringing this up! Yes, we are aware of this feature request and track it in phab:T250992. However, as of now we do not plan to implement it.