Isn't your argument relying on the Von Neumann–Wigner interpretation of quantum physics? And Schrödinger's cat wasn't a proposed concept of how things work, but an example of the absurdity of how the logical end points of some interpretations of quantum mechanics lead to absurd outcomes. It was an example used as criticism of how some thought about it all.
The Von Neumann–Wigner interpretation of quantum physics has the least, or rather no empirical evidence behind it. It's, in my own words, an argument or interpretation out of the "arrogance of man". That we elevate our own sense of importance in the universe because the notion of ourselves as just being as basic as all other matter and energy drives us to despair. It's an emotional drive that tries to imbue ourselves with an attribute (consciousness) that elevates ourselves to deities of reality.
As I see it, there's nothing to support consciousness being "special" if we observe everything from the point of view of reality itself.
I think that leaving out evolutionary reasons for consciousness and the reasons for life itself is a grave mistake when trying to assess what consciousness is. People have a tendency to become bias to their own existence and skew explanations into the realm of religious belief. But if we look at a logical concept of why consciousness and life formed, we begin to see why it emerged from our universal laws of physics.
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The major process of reality is entropy. Energy, both released and trapped in matter, is simply spreading itself out over time. Without going into the physical processes of the relation between time and entropy, the universe is, by the laws of physics, leaning towards spreading out energy as effective as possible. Life, as a process, is highly effective at transferring energy. Both from the sun and from the matter of celestial bodies. There's an inclination towards the formation of life, by entropy itself. And the more energy demanding life is, the faster entropy moves. The complexity forming out of this is generally in line with speeding entropy up, and the complexity might seem oddly beautiful to us, but may just be iterative as anything else in nature. Consciousness then, is the spear tip of life adapting to energy consumption. Adaptation is a key component of consciousness.
And it's through adaptation that I propose consciousness stems. There's an interesting "coincidence" that we see advanced consciousness in mammals and some reptilians. The evolution of advanced consciousness seem to be linked to major apocalyptic events in which the remaining animals that survive require themselves to be highly adaptive to the post-apocalyptic environment they exist in. The more adaptive a species can be, the better they will prosper and spread. And those who required most adaptation among large animals were the mammals and remaining reptiles. Basically explaining why mammals and some birds show the highest level of intelligence in nature.
High intelligence in consciousness becomes a second step of evolution. The basic form of evolution relies on cellular adaptation out of chemical reactions. The next step is instinctual behavior that is changed over generations. The third step is the lifeform itself adapting to continuously changing environments. The fourth step is spreading adaptive behaviors between lifeforms. Through this we can see life evolving the consciousness we possess; featuring all steps within us and the fourth through advanced language and spreading of ideas.
Consciousness, with empirical evidence supporting the predictive coding theory, operates on primarily generating a hallucinatory representation of our surroundings, then using previous experiences stored in memory to predict events as we navigate through reality. This process is so complex and malleable that our experience of it appears as the experience we have as thinking beings. We believe ourselves to have free will and "thinking" but in general, we are only operating on an advanced prediction process in order to adapt to our surroundings. Rather than our adaption being moments apart in time, our advanced cognition makes it happen on extremely short timespans. We can adapt within microseconds. Evolution has driven chemical reactions, genetic changes, through instinctual behaviors changing over generations, to social changes (like in dolphins), to end up operating so fast in adaption that our experience produce the illusion of free will.
But in the end, we are still acting on simple prediction operations, generating an experience that fold in on itself, predicting its own predictions, thinking about thinking. As such, this feedback loop produces abstract concepts that evolve out to complex ideas that is being spread by language.
Essentially this feedback loop forms a new level of complexity, just as we see in any other system in nature. Emerging a state of operation that on its surface look more complex than the parts permit. But we are not more complex than any other system in nature and reality, we just believe we are due to the limitations of a system reacting to itself.
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So I don't think that consciousness relation to quantum physics has a special bond of meaning or is linked in the way you describe. Consciousness operate much more simpler than being a bridge like that. Just because our brain have quantum mechanical operations being part of our function, does not mean consciousness itself stems from a bridge between Newtonian and quantum physics. It only means that as anything else in the universe and reality, quantum processes are part of our being.
We are, in essence, only an emergent complex process that is a natural progression of the physical laws and processes of our universe. And in my opinion, it's important to be humble to the fact that we are not special, but part of a hierarchy of emergent processes, steps on a ladder in which we exist pretty high, but without knowledge of the steps above us.