Initially, I wanted to tie the fly for the swap with an ostrich herl body but at the end I liked the dubbing better. But the ostrich herl got stuck in my head and then I felt like "duh!" - why don't I use the ostrich herl as hackle?
So I went back downstairs to the vise after my daughter went to bed and below is what I came up with. This looks like a feasible adult midge pattern which I am sure fish won't say no to when fished subsurface. I hope I can put them to the test soon.