Richard Mille is a renowned Swiss watchmaker and perfectionist. If you notice tennis player Rafael Nadal in action you will notice him wearing a Richard Mille Tourbillon watch, valued at around $775,000.00.
The design, materials, technology, and craftsmanship that go into this watch are second to none, without compromise and extremely complex. The watch is, without a doubt, the best that can be made, even though the aesthetics are not to everyone's tastes.
Why then, would such a brilliant designer sit down and design a perfect timepiece to be made of biological components? Yes, the complexity would be enormous, on account of the fact that he would have to make so many supporting systems, ducts, veins, valves, fluids, bones etc. made entirely from protein, water, and trace elements. The watch would resemble something like a very small mammal, with a brain of a cockroach, adequate enough to perform the function of telling the time It would, of course, need to be fed and one would have to wipe the occasional excrement from one's wrist.
This all sounds very absurd and it is. The question is, why would a "Creator" design man using such a convoluted mess of veins, pumps, fluids, and valves to perform the basic functions of a mobile creature? It does not make any sense at all to make a being in such a long-winded fashion. A creator would surely have done what Richard Mille did by utilising the finest materials available and precisely design the functions with the minimum of complexity.
We are now capable of manufacturing limbs far superior to what we have and it is only a matter of time for a chip to be designed that far exceeds the capacity and capability of a human brain, it is not a matter of if, but when. This can be achieved already by humans, surely a Creator, much bigger and more capable than we can imagine can design and build something even better.
There is absolutely nothing about any biological form whatsoever that suggests anything remotely that design had anything to do with it. Quite the opposite, we are a convoluted "over-complex" unit that has turned out that way over a vast period of time, adapting itself to its surroundings, nothing more.
My point is that complexity does not come from design at all, it builds over time as a matter of necessity. Ask Richard Mille.