Dear Richard,
I have read your well-written paper. I think your critical analysis is quite serious. At the end of your paper you are nonetheless expressing the hope to be shown overly pessismistic.
As you know there are 20 fundamental constants those origin is still unknown. I think a deeper understanding of these 20 fundamental constants will advance our understanding of reality tremendously.
I have found or discovered that at least one of these 20 fundamental constants is perceived insufficiently. That is the speed of light c.
My discovery is quite simple: If the Light is of Dual Nature, it seems quite natural, to assume, that the speed of light c is of Dual Nature as well. In other words: The fundamental constant of c is given twice - in two different modes - and not once as it is still implicitly assumed.
See my paper: Is the Speed of Light of Dual Nature?
If such a second still hidden face of c is really existing, it will change our fundamental understanding of the universe significantly because the discovery of every new fundamental constant does naturally imply such a paradigm shift .
Good Luck for Your Paper and Your Work.
Kind Regards
Helmut