To me, all those questions are much closer to creating a testable hypothesis than trying to ask how to go from 0 to 1, from the inert to the conscious. "Consciousness expression" sounds like something you could develop a measurement of based on an observable behavior. I'm not sweeping the problem under the rug, rather presenting a scenario in which trying to discover the origin of consciousness is like trying to discover the origin of energy.
Which happens to be the exact same problem.
This problem doesn't go away with any amount of changing definitions. Shifting the mystery under the rug where you can't see it doesn't mean the mystery has gone away, nor that everyone else is going to be fooled. Some of still see the lump under the rug you just created.