Keep my sleeping bag in your thoughts tonight. It is a young bag, in its prime, who thought that just because it was expensive it would be spared being converted to a top quilt for its owner. It will go into surgery as a North Face Propel 40 degree bag (Old style no zippers 16oz) that has proven it can go there and then some.
If all goes well it will come out of surgery a little lighter as a nice synthetic quilt with a Pertex shell that will see much use in its new form. If things don't go well it will join the other DIY projects that died during surgery.
Surgery will be performed by an unskilled DIY hammocker that has been brain washed by the group at hammockforums.net into thinking things like this are a good idea.