I certainly am interested in this, but I also would like to note that this is not just a matter of something 'more complex' arising and that I lack the imagination necessary to see how something very very complex can arise. Rather, subjective experience is a phenomenon that, no matter how complex your system is, is qualitatively different.

It's not like this is a trivial problem that philosophers of mind have figured out long ago. As someone else mentioned in this thread, it is a very deep problem. If you want to have your view challenged I encourage you to read any introductory book to philosophy of mind.