I don't know where Logos developers are heading in this, but I would like to suggest the following:
a) license synchronizations and new book downloads are done only in online mode. The user should log in to logos.com first. This would prevent situations - which are possible in version 3 - when a visitor can copy the Logos license backup file and use it for installation on another machine.
b) logos.com password is not automatically saved, unless the user chooses to do so.