I suspect one thing the James Webb will show, is those most distant galaxies have heavier elements than the current model allows and even further galaxies will come into view.

Basically our current, Big Bang cosmology has some shaky logical underpinnings, that have been patched with some enormous fudges.

One of the earliest was to use the premise of spacetime to explain cosmic redshift, when it became apparent it increases with distance, so is either an optical effect, we are at the exact physical center of the universe, or some fudge factor could be inserted.

The reason it doesn't make sense is that if relativistic space were to expand, the speed of light would have to increase, in order to remain Constant. Which pretty much contradicts the whole idea.

Two metrics of space are being derived from the same intergalactic light. One based on the speed and one based on the spectrum. Since the speed is still being used as the denominator, or it would be a "tired light" theory, we are back to either cosmic redshift is an optical effect, or we are at the exact center of the universe.

One way light does redshift over distance alone, is as "packets," since the higher frequencies dissipate faster, but that would mean the quantization of light is a consequence of absorption, thus measurement and we are sampling a wave front, not fundamental to the light itself. It's called the "loading" theory of light and that really does go against the high priests, so we are suck with multiverses and all the other fantasia.