Systemd-sysext provides us with a very simple mechanism to apply overlays to /usr, and seems to simplify the installation of apps (or even dev/debug images) and etc. in the OS (something that GnomeOS is already working on. Of course, remembering that it is an A/B Root system). Would it be feasible to apply the same to Silverblue and CoreOS?
You might be interested in this upcoming talk: Waiter, an OS please, with some sysext sprinkled on top :: All Systems Go! 2024 :: pretalx 
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Note that this won’t be a “solution” for this question as we won’t cover adding kernel modules such as the NVIDIA one.
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