It might be worthwhile just changing the default in the template and not trying to do some sort of fallback configuration dance.
In part because the existing parameters are x86_64 UEFI specific (I think we have a bug about arm64 EFI someplace).
If we can compare with Centos and ensure it boots with whatever streamlined change, I think we'll be good. The major aspect to keep in mind is Grub is likely going to be phased out in the future of the major distributions.
It might be worthwhile just changing the default in the template and not trying to do some sort of fallback configuration dance.
In part because the existing parameters are x86_64 UEFI specific (I think we have a bug about arm64 EFI someplace).
If we can compare with Centos and ensure it boots with whatever streamlined change, I think we'll be good. The major aspect to keep in mind is Grub is likely going to be phased out in the future of the major distributions.