@kon14 You’re right, it’s not what I’ve asked
I’ve tried SB while about 6 months, in my case I’ve lost too much time (no french layout on boot for luks encryption, no access of Nautilus bookmarks inside Apps, no U2F access in Firefox because of Flatpak, many troubleshoots with IDE to access external programs, podman replacement isn’t really compatible and poor podman-compose compatibility, each time I’m opening Gnome Terminal in 95% of the time I need to type toolbox enter… ), you can see theses questions on my profile.
I really hope to switch to SB soon, but currently there is too much problem « in my case ». I’m not really sure the Flatpak way was the good one (now, there is a lot of commercial or untrusted apps in Flathub … ). I love the idea of containers, but may be a firejail on the apps installed with dnf is enough. What I believe is missing for security is an internal Gnome popup confirm each time an app try to access to some privacy devices/content (out of the folder of his configuration, access camera, gps etc… )
But, it’s another subject
So, for now, I believe it’s may be a good idea to have CoreOS and then to install the packages of Workstation on it… and after some more researches, I’ve found there is not yet LUKS encrypted possibility on CoreOS, so I’ll wait for it