It'd be cool to see a nice UI (like this) atop something a little better built out & defined like systemd-nspawn. Like Quadlet for containers, Nspawn for VMs is a nice base with tons of great capabilities & very standard management patterns. There's nice .nspawn files and drop ins, where config lies, and (semi) standard paths for mounts and machines. Having that stable standard base would raise my interest & confidence a lot.

This recent guide covers a ton of nitty gritty, down to baking your own vm images & doing everything by hand. But by half way through, it builda to using the nice machinectl cli that is the real meat of the experience. https://quantum5.ca/2025/03/22/whirlwind-tour-of-systemd-nsp...