I certainly have some ideas the creator should consider. Take "handedness". The entire idea that one side of your body should work better than the other is, to say the least, bizarre and something the most incompetent earthly engineer would avoid.
At least the creator (should there be one) should feel blessed for fans like yourself who have such low expectations. Perhaps our (your) creator is just the underachiever in a host of superior beings.
And yet look at all of the things that He had to make sure were perfect for mankind to exist. What tilt would you angle us at? And what speed would you have us turning at? How far away would you place our heat and energy source? There's that darn gravity
thing.
I too, would like to see your competing design. And not an improvement of His tired old inadequate design, with skin that closes and a cooling system, waste removal system, DNA identifiable system, vulnerable heart, lung, brain arrangement, 4 dimension living model. A whole new design should be in order.
And then breath your life into it and show us what you made?
His ways, His thoughts are much higher than ours. For now you have everything you need for this vapor, this short portion of your life. What you do here merely determines what you do next. You are a work in progress.
eg > Spiritual eyes can see much more than human eyes can. Human eyes are a blessing, for now. If we actually saw the powers and principalities at war with us, we'd never get out from under the bed.