If we follow your analogy we find a God who uses us for His own aesthetic satisfaction - perhaps a God who finds wars beautiful, or who arranged the Holocaust
I look at it like this. If Grand Design is responsible for all of this, then by it's own witness of sheer complexity, the one who created all of this must be vastly complex in both thought and deed. So I look at all of the various religions out there and find gods who are basically mirror images of humans with their faults amplified. There's nothing complex about any of those gods. Any type of religion I also discount because they can all be summed up as works oriented where man tries to reach up to God. That's impossible but very prideful to even attempt it indeed.
I have discovered that the Creator attested to in the Bible reveals a being that is far more complex than all of my ability to understand will lend.
So by you trying to tie up my tapestry into a neat little package of an evil sadistic being, is fanciful at best.
The Bible says that no one can know or understand the mind of God, and a timeless eternity is being prepared for those to spend it in, for just that very purpose. It will take an eternity to even begin to understand such a complex being and we were specifically created for that purpose, with the ability to grasp it in small doses, process it and then prepare for more. Humans are eternal according to the Bible and this complex Creator forknew us before we were created. That is complexity. That is intellengence. That is ability concurrent with the abilities to speak a universe into existance.
The Bible claims that the central focal point of creation was not the universe but Man. Man is the only entity that was created by the Creators own hands and received the Creator's own breath of life. Everything else was either thought into or spoken into existance according to the Bible.
So to say that God finds war beautiful is incorrect. But he can take it and use it for his purpose. The most important thing to the Creator of the Bible is not our pleasure and happiness here on this planet in this lifetime. That is of minimal importance to him. Otherwise, everyone who would become a follower would experience a plethara of wealth as soon as they proclaimed their faith.
Something far more complex and extravegant is happening than total world bliss in this lifetime, and this revealed complexity is supportive of Grand Design and a super unimaginably complex Creator.
What we perceive as pain, suffering and evil are just that by are own acknowledgement, and the Creator's. But just like the steps in the processing of the wool, the circumstances that we are experiencing are being used to mold us into something like usable thread that will become part of something magnificent and everlasting instead of dead shedded sheep's wool that falls off and rots on the ground.