After compiling the initial list of folders to check, can FileVerifier++ detect filesadded to one of those directories?
If you are asking whether or not it will spell out exactly what files have been added, no, it does not do this. It does have the option to hash only files that have changed, however. Files that have changed include files that are not already in the list. If you have the Tools -> Settings -> Don't recalculate known good items set, adding the directories again (via. drag and drop, Process Directories, or Advanced Processing), items that have the same timestamp on disk as in the list will not be re-read. In order to effectively use this feature, you need to save your hash list in a format that saves timestamps, such as FVA, FVB, or CSV.