It seems I am of a different opinion than that of you in regards to what should be regarded as a drawback or fluke in design. You perceive faults; I see ways of finding humility, ways of slowing us down, to really think about the important things.
My large breed 15 year old dog is dying at the moment; she lived a very good long life in dog years. 105 years, according to the perceived notions of science. Is it a flaw in design that a creature of less intelligence and size than myself die earlier?
She could run faster than me when she was at the top of her game, but right now… when she tries to walk, she just crashes to the floor… It is the natural consequence of living that our bodies give up at one point or another.
Honestly, I don’t see your point; these “drawbacks” are nothing more than you seeing pain as evil itself, whereas I see pain as something which can help us learn some empathy for others.
Physical pain is always referred to by the saints as a way of being more like Christ, who was whipped and then crucified on the cross. There is joy to be found in suffering, but only to those who understand it.
Being designed in God’s image isn’t about physical appearance, or the even the body itself, but what the whole of what the body can accomplish, which includes our most potent feature, the mind.
A spiritual healthy person can use these “flaws” to bring themselves closer to Him, doing exactly what they were meant to do. The results are that they are more like Him, even if it is only in a miniscule way.
In reality, the quality of life depends on the perceptions of the mind, not merely the abilities of the body or its deterioration. In this regard, we are head and shoulders above other animals.
I believe that you may understand.
I enjoyed this question.