1. i strongly hope deleted files by 'file location > cover art > clean folder' should be moved to 'recycle bin' instead of complete cleanup.
sadly enough, i forever lost some of my precious private files during tests.
even high-performance disc recovery tools like finaldata couldn't recover them. they never be shown on the list of recoverable data when analyzed with tools.
2. whenever i change cover art folder, make a question box popup like "do you also want to move folders/files in it?"
when i test some bugs, i changed the default cover art folder to d:\ which has so many folders and files (about 20gb).
and i tried to change it back (or change it to another location), mc21 automatically executed copying the tons of files and folders to a new location even to death.
because there is no question before the execution of moving data, mc21 got frozen whenever i tried to change the cover art folder.
i finally had to roll the all settings back with a library backup file.
so an additional question process before changing cover art folder MUST be required, or a selective process (change location with data transfer/change location without transfer) should be inserted.
kindly pay the best attention to these suggestions.