No. My factual , evidence based conclusion is that something's size (a dinosaur) does not mean it's more complex than something smaller. And if intermediary species aren't here to you now, it's because we have conscious viewing of current life. They won't be intermediary on a historical basis until humans see them a few million years from now when their ancestors are quite different. Every species is constantly intermediary, because everything changes continually.
Right now, humans mutate. We are developing, other species are developing. We group animals into certain groups because they are similar. The fact that species are similar to one another doesn't disprove evolution on the grounds that they're too similar. We would expect similar species to evolve from similar species.
The fact that vastly differing life-forms exist doesn't disprove evolution either. We would expect original life-forms to exist as long as the conditions necessary for their existence continue. An amoeba splits, mutates, the mutated amoeba reproduces thus we have two slightly different amoeba. Both continue to reproduce so we have thousands of 'units' of each type. Some of those mutate and reproduce so we now have thousands of three types. Eventually one gets an evolutionary advantage. Sometimes the mutations don't give evolutionary advantages so a type dies out.
Cancer is an evolutionary disadvantage in humans, just like the sickle cell illness. But the sickle cell gene, if passed on by one parent, has a 50% chance of making the child immune to malaria.
Cancer is an evolutionary disadvantageous mutation. Sickle cell is advantageous in reproduction.
Evolution happens.