I would realy like to see the desktop app to be password or passphrase protected in a similar way as the mobile app is. Messages from a secured device are now effortlessly sinched and readable to an unsecured desktop app. Yes, there are aguments that access to the desktop should be limited, but we all know how easy it is to circumvent or reset a user password on a (stolen) windows system.
So, please secure the Desktop app as well ;)

Thanks!