Hi Mathias,
If you can support Master Password to protect FTP Connection. Normally we often save password of ftp connection for easy next time. In case stranger or friends borrow PC and connect FTP then it is not secure.
There are some FTP Client support Master Password as FileZilla, WinSCP and Total Commander also support this feature.
So I hope we have one more layer security for FTP in case user save password of FTP.