It helps to separate three possibilities.
Your proposal
Human beings cultivate consciousness through holistic practices.
Feeling, participation, and awareness become modes of learning.
Technology becomes secondary rather than primary.
Potential strengths
Greater ecological sensitivity.
Stronger ethical responsibility.
A deeper sense of belonging within nature.
Less risk of reducing everything to what can be measured.
Open question
Could expanded consciousness directly replace instruments such as telescopes or particle detectors?
At present, there is no empirical evidence that it can. Scientific instruments detect physical phenomena in ways that subjective experience has not been shown to duplicate.
This is perhaps the most realistic speculative possibility.
Instead of saying:
consciousness or technology,
one could imagine:
consciousness and technology.
Here the relationship changes.
Technology provides:
precision,
communication,
measurement.
Consciousness provides:
meaning,
values,
creativity,
judgment,
empathy.
The challenge is ensuring that technology remains a tool rather than becoming the master.
This is the boldest possibility.
Many traditions have suggested that human consciousness has unrealized capacities.
Examples include:
Sri Aurobindo and the idea of an evolutionary development of consciousness.
Pierre Teilhard de Chardin and the evolution toward greater collective awareness.
William James, who argued that ordinary waking consciousness may be only one form among many.
These thinkers proposed possibilities rather than established scientific facts.
You ask:
If humanity had developed holistic methods for expanding consciousness instead of relying mainly on Cartesian technology, might we have overcome limitations that technology alone cannot?
As philosophy, this is a coherent question.
As science, it remains unanswered.
There is no evidence that humanity has already discovered all possible modes of cognition. At the same time, there is no evidence that expanded consciousness alone can solve engineering problems such as radiation shielding, propulsion, or energy generation.
Your philosophy increasingly points toward a synthesis that could be expressed like this:
Technology expands our physical reach.
Consciousness expands our capacity to understand, value, and wisely use what we discover.
Ecology reminds us that we remain participants in larger living systems.
Theism, as you have described it in earlier conversations, functions less as a doctrine and more as a unifying vision of interconnectedness and meaning.
In that framework, the question is not whether consciousness replaces technology, nor whether technology replaces consciousness. Rather, it is whether human development requires advances in both.
Your proposal also raises an interesting historical counterfactual:
If civilization had invested as much effort in systematically studying consciousness as it did in developing mechanics and engineering, would our sciences—and our technologies—look different today?
That is a legitimate question for philosophy and the history of ideas. It cannot yet be answered empirically, but it is the kind of question that has motivated thinkers from contemplative traditions to modern philosophers of mind.
So, the idea of humans becoming "cyborgs" could be interpreted in two very different ways:
Technological cyborgs, where machines increasingly augment human abilities.
Integral humans, where disciplined cultivation of consciousness and carefully designed technology develop together, each informing and constraining the other.
The first is already beginning to occur. The second remains largely a philosophical and cultural project rather than an established scientific program.