Awesome news. We will add all of the flags once they are approved. There are three that we are focused on in the cloud instances: 1) gp2 volumes by default -> gp3 volumes by default 2) IMDSv1 fallback -> IMDSv2 required. 3) classic bios boot -> uefi-preferred boot.
While you're making the modifications on COPR, I suggest that you look at all of these in sequence.