set front-end uploads private by default?

Not yet, but i will add this option.

Thanks very much!

Fixed 6.6.03
From the readme:

Table VII-B7 has been renamed Table VII-B7.0. Table VII-B7.1 added: Front-end uploads get status private.
This overrules the setting of VII-B7.0, but modaretion emails will still be sent if VII-B7.0 is ticked.