Absolutely amazing. We can't even decide on how to classify the evidence, yet insist it is clear enough to support the theory beyond any questioning.
It is not necessary to have an accurate classification system at all. It is a convenience to decide what has descended from what. Since some could be in two different categories, it supports the theory rather than weakens it.
If we were to find fossils that reflected only what we see today, that would be evidence for creationism. Since we don't, creationism is false.
Why is this amazing, (except maybe you are amazed at the strength of the evo case as illustrated by the URL I gave you and the weakness of the creato case)? Difficulty in classifying transitionals is a prediction of ToE, which is why it is so interesting that the creato scientists cannot agree on the classification of fossil hominids. If we could classify everything easily it would be a falsification of ToE!