A lot of people prefer a visual layout over a boring text menu, and many modern developers have listened to this feedback. Having an interactive globe or a flat map interface makes switching between countries much more intuitive and fun. You can easily see the geographic distribution of the network nodes and understand which locations are closer to you. If you want to see a great example of a clean visual directory, you can check out this vpn server map on the official page. It gives you a complete overview of where the physical data centers are located across the world. In the actual desktop app, you can simply zoom into a continent, click on a specific country pin, and the client will instantly establish a secure tunnel. I find this interface style incredibly useful when I am traveling because I can quickly see which neighboring countries have available nodes with low latency. It is much faster than scrolling through an alphabetical list of a hundred cities, especially when you are using a laptop trackpad on a bumpy train ride.