Right. I'm being a bit less ambitious here: I've recommended fedora to plenty of (non-tech) people around me, and fedora presumably already has all the necessar

Right. I'm being a bit less ambitious here: I've recommended fedora to plenty of (non-tech) people around me, and fedora presumably already has all the necessary tools to add such a simple “workspace manager” without much disruption. It would provide an easy intuitive step-up in terms of security, starting from something people already know.