This sounds like Fedora Silverblue, which already exists.
A Gnome OS that you could use is a really interesting project!
I love Fedora but I guess what I love in it was s in fact Gnome since I don’t think the Fedora team is making a lot of modifications.
Honestly that's what I love about fedora. Not just gnome but every package they keep it untouched on the mainlain branch.
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