First, I hope I understand your question corectly and second I don't want to get in a heated argument. I have a theory of how species came. God created two dogs. They had all the genes in them. Their children lost some genes and became more and more specific. Once lost the genes were gone. So a terrier won't have a German Shepard.
A beetle may lose its wings. That is speciation and micro-evolution. He can NEVER get his wings back. He is losing info. not gaining. In my mind, Macro-evolution is not plausible at all as a FACT.
BTW- IMHO Darwin did not understand the complexity of life. He saw speciation. He supposed it as macro-evolution. It could have been a plausible THEORY till more knowledge. He did not know about cells, atoms, etc.
P.S.- I was thinking he proposed the theory humbly and said "if the data supports it". I'm not sure but thought I remembered that.
I suppose no one in the past 145 years has ever thought of that and put it to the test?