I want my server to host a desktop that I can use remotely. Not for managing the server itself; like you describe, I use common tools for managing it.
I just need a desktop for a while - sometimes I want to work on a machine that’s not the one I’m physically using. At the moment I simply have an old desktop running Windows; I VPN to home and RDP to to the machine which works very well, but it seems a waste to have a machine running for this purpose only. I could add the machine to the swarm if I could host a desktop in Docker but that’s not really the intent of Docker and doesn’t yield great results.