Went down an OpenSUSE rabbit hole today. Specifically MicroOS. 

Seems to me the trend of containerization continues. MicroOS is immutable and can be configured to run GNOME or KDE, so it can serve as a very lightweight option for daily driving. Plus it has automated updates. Every time you boot it has a maintenence window where it tries to update.

All of your applications can be run via containers like flatpak.

If you're a developer you can use docker (or podman) to build your applications. Heck you can run entire development environments in containers with dev containers. 

I have even discovered tools that allow running terminal applications in containers.

I'm only running it in virtualbox for now, but might consider using it for a purpose built development machine.

Dev Containers: https://containers.dev/
CLI Containers: https://containertoolbx.org/
OpenSUSE MicroSO: https://microos.opensuse.org/
Podman: https://podman.io/
Flatpak: https://www.flatpak.org/ 

 Fedora has something similar to MicroOS called CoreOS:

https://fedoraproject.org/coreos/

But doesn't really seem to be as flexible as microos from what I can tell. But I don't see why you couldn't do the same thing with it.