As long the FTP feature does not allow to set share/disk based security settings I like to see a new default share folder in Unraid which is called "FTP":

 

And in addition a new default ftp path as follows:

 

By that the FTP service would not use the root-path as default and the user sees directly which path can be accessed through FTP (and which not). I remind the first time I used the FTP service and was surprised that it allowed access to all server paths.

 

Optional: If possible, the user should be able to add multiple paths, separated by comma:

/mnt/user/FTP, mnt/user/nextcloud/common/nextcloud/data/

 

I previously used ProFTPd on verion 6 but it stopped working on OS7.
The built in FTP server is very easy to setup and operate BUT:
It doesn't start by default. I would like for it to automatically start after the array starts.

AND

For some reason, it defaults to /mnt/ directory.

 

This gives RW permissions to whatever can access it.

I hate that! 
FTP is notoriously easy to hack. And everyone knows that it uses port 21. So it's easy to assume that a port scan of port 21 can reveal your easy to hack FTP server which can lead to losing everything. That's frightening! I only need it for my security camera NVR system to upload the videos and images to. That's it. 
Where ProFTPd I was allowed to set the FTP directory to /mnt/user/CameraNVR and the FTP server would ONLY be that directory so if the FTP was to be compromised, that's all I'd lose. But now I risk losing it all. 

I have tried a few of the community FTP servers and they're all waaaayyyy too difficult to configure for me.
 

Any inputs or thoughts?