Interesting thoughts, Graham. As you know I tend to the dual aspect position. But even though mind and matter emerge from the single underlying reality, it does not eliminate the distinctions that are essential to our experience. Mind and matter are clearly distinct, but so is life and non-life. I guess one could say that mind creates the illusion of those distinctions and creates the illusion of matter, and the illusion of life, but that is not really dual aspect monism anymore, that is idealism ala Kastrup.