Yes, our behavior would be different without free will, we would be even more easily controlled by outside forces than we currently are. We become totally reactionary, pre-programmed robots ulitmately with no choice as to how we live our lives. Our "buttons" could be pushed in any number of ways and we would be forced to react as others dictate because we would have no will of our own.
I never said that only humans have free will, I said that consciousness has free will. Therefore if you believe in the primacy of consciousness, then a flower also has free will, a cloud, an atom, everything...the flower doesn't open to the sun because it has to, but because it wants to experience the warmth and growth is provides. Consciousness is fractal as is everything else in existence, infinite spirals up and down from our current perspective.
I disagree that free will stands in oppostion to this unfolding, but rather is the first law of creation, that consciousness is free to express itself in whatever manner it chooses in order to BE the growth and unfolding of existence. It is this choice, this freedom to experience and grow that expands the universe. Of course you can CHOOSE to resist the eternal unfolding, which can manifest as Dis-ease in your physical form, or you can go with the flow. Your choice.
I agree with you that the universe does not need free will, and there may even be parts of it where there isn't, or other entire universes where it is not operational. But we live in a free will portion of this universe, and you are free to resist its ever unfolding expansion, or rather choose to go with the flow.