Not technically true; I suggest you consult the BlizKick docs on my Amiga 4000, I use BlizKick to boot a pre-patched "Kickstart 3.9" image, with a couple of BlizKick module extras.
I suggest you consult the BlizKick docs yourself, it describes very detailed why it is not possible to create a patched ROM
chip from all the new modules.
Of course, because BlizKick loads all ROM and patches into RAM, you can use as much storage as you want for BlizKick's image. There is an extra parameter you need to set in order to use more memory than the 512KB a Kickstart ROM chip has (and needs).
IIRC the BlizKick docs also was the place where was described why it is so difficult to make a new Kickstart ROM out of all the improvements added to new OS versions. It is much easiser to just unstall some reset-proof modules like BlizKick does.
Bye,
Thomas
