Garland,
In Portland the obvious would be The Reserve with one 9 from the Fought and one from the Cupp course. One nine with bunkers, one without...
Of course they did the funky one hole composite with an ending of 5, 5, 4, 5 at the Jeld-Wen Tradition.
I also remember hearing some years ago the Pumpkin Ridge entertained the idea with the USGA of doing a public/private composite. As I recall it was the front nine at Ghost, 10, 11, 12, then six holes at Witch - maybe 4, 5, 6, 7, 8, 9. That back nine course would be REALLY LONG and tough with converted par 5s on 10 and 4.