Add modes to vpn blocking such as strict or learning or just vpn mode.
A simple yet beautiful motto for the company:-
Seed4.Me = (equals to) Privacy4.ALL. Stay connected and feel free with Seed4.Me
Make the Windows Desktop Application portable. And add a separate setup file or software which can control your VPN logins and protect it with a master password.
Have an option to sync passwords using barcode, too, or use steganography methods... Include all this in an option called "other fun ways to save passwords" or something like that, so that users may view it as fun and even learn from it.
WEB Based Protection doesn't always scans all https links sometimes + the initial scan takes a longer time which can be understood, but still, needs to be developed.