Adams difficulties in so-called paradise were great.. even before he blamed his sin/failure/mistake(s) on Eve.. Mankind has been blaming their lack on others ever since..
The creation "metaphor" is quite complete except for where did Satan come from.. Would easy to blame GOD too.. That is, IF Satan was not part of the "Plan".. Factored in, Satan would make Gods TESTING of the human spirit(not his flesh).. quite wonderful and pure genius.. Mankind even KNOWING they are spirits(like God/Angels/Satan) far beyond flesh is quite a revelation itself.. Most do NOT.. but identify will animals instead.. i.e. indentifying with the flesh..
That's an interesting supposition and I would not even begin to guess what you have in mind. I can think of one thing that might lead to their consternation but I would not label it a great difficulty.
I will also agree that God's plan was wonderful and genius because, well, he's God. I will also agree that their knowledge was revelatory but in the sense that they went along with the created being instead of the uncreated Creator. They had to choose whose interpretation of nature was correct was it God as absolute being or the derivative being Satan? Would he accept God, his creator, interpretation of the future or would he look within himself and use an empirical model of self interpretation and test the model to see if his interpretation was correct? It revealed what man would do from that point forward and that is they would look within themselves for the point of truth testing particularity as opposed to looking outside themselves to what God had revealed.