However, the real issue, as always completely unaddressed, isn't attempting to make a gague-invariant theory of qualia, or even defining what "qualia" is (I am totally unconvinced it is an EM field, there must be an epigenetic component). The first step is defining what "consciousness" is! Is it awareness of qualia or awareness of reality? These are not the same thing. It seems significant that any animal I would call a little conscious, even ants, are capable of being startled or curious when their sensations mismatch or incompletely describe reality (and animals that lack any sense of curiosity are at most borderline conscious). Curiosity and surprise[1] seems hard to convey in an EM field. Qualia strikes me as a somewhat technical problem of neuroscience, and the "hard problem of consciousness" is unscientific BS. The simplest basics aren't understood, which leads to totally unhinged statements like "in some ways a thermostat is conscious" because in some ways it seems to fit the hard problem. But statements like that are ideologically motivated by a sort of tech futurism: rationally, we should be deeply skeptical of an account of consciousness which insists that clocks perceive the flow of time.
[1] There's an information-theoretic version of surprise which intuitively describes "surprising" data. A sudden bright light has high surprise and is certainly surprising. A sudden realization that the vine you're leaning on is a large snake might involve very low information-theoretic surprise... and is far more alarming. So how do you systematically quantify this second form of surprise?