Being able to indicate the location of the airootfs.sfs file without having to provide the UUID of the partition

This is not a bug, it is a possible improvement that needs to be studied to see if it can be implemented. The idea is to be able to tell the kernel by parameter where the airootfs.sfs file resides without having to pass the archisodevice parameter.

Essentially it is something similar to what grml does.

The reason for this would be to be able to do the same thing with archiso that is done in this AUR package, where it is not necessary to pass the UUID of the ESP partition to the kernel for boot.