You forgot this:
Ensure Tor Browser default screen resolution is uniform across Qubes Debian, Qubes Whonix, and baremetal Debian · Issue #1856 · QubesOS/qubes-issues · GitHub (and probably more fingerprint-related stuff).
https://forum.qubes-os.org/t/grapheneos-vs-qubes-os-security/6319
At least you can already order Librem 14 with preinstalled Qubes to any country AFAIK (but not with other software).