Interesting points but I still would not label it as a "failed experiment", the difficulty is that we know God is perfect in every sense, so how could He make something when He already knows what the outcome will be..as He is all knowing.
That question is asked on many levels such as why did God create man in the first place if He knew man would fail?, and no one knows the answer to that except God. In essence the whole of human race became a failed experiment after it fell. I use the term failed experiment to think of God as a scientist and Eden His laboratory. We could also think of Noah's flood as God cleaning up the mess of His failed experiment. But some would say that it wasn't a failure but part of God's intended plan all along to let or make Adam/Eve fail. Since I believe that God tempts no one with evil, I cannot accept the view that it was God's plan all along. This obviously blows ones mind when they think about God's foreknowledge versus His predestination as we cannot fathom how God who is outside of time, can also be limited by time. Or how a perfect God , can have failed experiments (or outcomes rather) at all!
When we read the book of Genesis from beginning to end, in my mind it does give that impression that God creating the woman for man was an after-thought. I said "failed experiment in giving Adam a helper". Not that the animals were failed or imperfect themself. But it does give the impression that animals were not found to be suitable (implying that God's original intention was to use animals, (and I'm still not talking about procreation )), so God decides to make a woman.
Also, the whole language of Genesis about God "seeing that it was good", makes one think that the whole creation process was a test chamber in which the resultant outcome could have been "it was bad". If God always made everything perfect why would God need to approve Himself by saying it was good? Reading Genesis, it seems that as God goes along creating each thing in sequence, He pauses to reflect and evaluate the outcome, and concludes "it is good", before going to the next step in creation.
It raises questions about whether God knew what He was doing with absolute surity of the outcome as is often assumed, from beginning to end of the 7 day creation. Or whether it was a step by step process in which there was some possibility of failure in the outcome. I might be so bold as to say, that if God had not taken His time, 6 days, to create everything, but decided to do everthing in one "big bang" (pardon the pun) in a split second, the outcome may not have been successful. Much like putting steak, vegetables and fruit and icecream in a blender and pouring it into a bowl doesn't give you a properly made three course meal.