Allow users the create their own local networks, with devices that are running ProtonVPN.

For example a user would like to access a web server at home from his mobile device. Either directly to the web server or just by connecting to the his home LAN.

Another example, two ProtonVPN users would like to have a connection between their personal computers, for a network development project.

This would of course lay the foundation for a encrypted p2p messaging.

And for advanced users and professionals this would make life a whole lot easier, given that the implementation would show what devices have what IP on the network, or the IP range a connected LAN has.

Bonus points for making a Personal DNS, that adds known devices automatically to its database.