Maybe we should first start by being honest about the methodology here.
Excellent suggestion. I am all in.
Science can observe fossils and geological layers.
Ouch. We just decided that we would be honest. And this is already a bad start. Science can observe much more. It can observe patterns of similarities and differences in genetics, anatomy, in geographical distribution. It can observe changes in genotype and phenotype happening in real time between different generations. It can unravel metabolic pathways. It can even set up controlled experiments. So it can do much more than what you suggest.
It can hypothesize on connections between these observed facts and come up with grand theories like those of common ancestry and evolution as a mechanism by which life develops over time.
And test these hypotheses. You forgot that science tests it's hypotheses. Again, I see a deviation from the previously suggestion to be honest.
We can observe generation-to-generation micro-evolutionary changes but no genus-to-genus change has ever been demonstrably proven using the scientific method. It cannot be because we cannot wait thousands of years in a controlled experiment to see the start and end of the experiment.
And we can see the result of these changes. We see species appear in geological layers that were complete absent from older layers. Unless we are going to postulate a perpetual creation (this as been suggested b biologists in the 19th century), there is no other conclusion possible than that these "new" species evolved from older ones. And these "new" species fit in the pattern of similarities and differences with the older species to confirm the ToE.
Since the scientific method cannot demonstrate macro-evolution then this is not a scientific discussion but rather one of my model versus your model. You may well consider your model more credible than mine but you cannot prove that credibility.
As is nearly all science. A clash of models. That is why in chemistry the phlogiston model has been abandoned for oxygen. That is why we now recognize benzene as a structure of resonating Pi orbitals instead of this structure:
That is why the Steady State model got abandoned for the Big Bang model, because the empirical evidence fitted better. That is how plate tectonics got adopted, why classical mechanics got replaced by General relativity, etc.
Because some models fit the empirical evidence better than others.
There is evidence and then there is the Theory of Macro-Evolution but the evidence cannot be used scientifically to prove Macro-Evolution because the time spans involved rule that out.
Good. Evidence and theory are two different things. And all the evidence support the ToE.