Monist vs. Dualist Experiment?

[Neo-Scholastic]

And the only thing stopping you from taking the next logical step is your insistence on leaving space for some sort of magical, non-physical phenomena.

Newton’s critics dismissed gravity as magical. Now we consider it a fundamental force. Mind at least appears to influence physical processes and could be fundamental. Or not. Either way an adequate theory of mind must account for all relevant phenomena. Your position only redefines the phenomena of qualia in functional terms because it suits your theory. You have not even attempted to explain how qualia reduce to functions.

...what I take as evidence of causal link is that change in one results in expected change in the other.

Granted. Now explain which is the cause and which is the effect. If a physical change to the brain causes a mental property to manifest, then can a mental property cause a change in the physical brain state? Or do they work in parallel? Do physical processes cause other physical processes while at the same time mental properties are causing other mental properties? Those are your only options. Choose.

There is no emergence in my view of qualia.

Another evasion. You claim high-level functions emerge that provide for self-reference. Then you call that qualia.

There is no over-determination or epiphenomenalism.

Only because you redefine qualia as a function and not using its accepted definition.

there is an evolutionary advantage to developing subjective experience.

Asserted without proof.

...and the sign-significance relationship makes sense only within the context of subjective experience.

Subjective experience is what a theory of mind must explain. You haven’t explained anything about the relationship between subjective states and physical processes. You take it for granted.

Few of the additional empirical features you mention (in addition to verbal reports of pain) would be present in a machine intelligence, like the hypothetical Cyberboy.

I'd say that the Cyberboy displaying those features would mean that it has been installed with the qualia function.

QUALIA FUNCTION!!! I have to throw the bullshit flag on that one. Just what exactly is a qualia function?

Now as for your "self-referencial data processing", it seems pretty clear to me that steam engine governors and thermostats perform self-referential data processes. I doubt either are conscious.