/boot/efi is clearly not ideal for a number of reasons, but this is what we have today and changing this opens up another can of worms. For starters this will stop working:
# rpm -ql shim-x64 /boot/efi/EFI/BOOT/BOOTX64.EFI /boot/efi/EFI/BOOT/fbx64.efi /boot/efi/EFI/fedora/BOOTX64.CSV
That's actually an anti-feature that needs to go. Packages should not use rpm to put files directly in /boot. Systemd doesn't do this, the kernel doesn't do this (except for %ghost files). grub2 does some directories, but thankfully no files,
Nope:
# rpm -ql grub2-efi-x64 | grep EFI /boot/efi/EFI/fedora/grub.cfg /boot/efi/EFI/fedora/grubx64.efi
Only systemd-boot gets this right today, with files packaged in /usr and bootctl updating the ESP. Oh, and fwupd handles it correctly too.
take care, Gerd