I would like to see an extra option in the Confirm File Replace dialog when moving files.
That option is Keep Newer and Remove Older.
This option moves files to the destination if newer but also deletes files from the source when they are older or have the same timestamp. That way I don't have to manually delete all files that weren't copied manually.
In know that the selection is kept when moving files so a Delete is one click away but it sometimes happens that the selection is lost. And the less I have to click/type the better.