If some one wants to make it really easy for people to join they're server, it should be possible to set up magnet links. When one of these is clicked, a prompt appears asking if you want to launch the game and connect to the server. Clicking yes will cause the game to skip the launcher loading straight into the game. You would connect to the server using the already saved information in the .session file. If no such information is available, the launcher will load, with the server address pre-entered.