It would be great if the Surface Duo could present its 2 screens as separate displays to the remote session. It would remove the issue of the lost pixels behind the hinge. Although the screens are small, having dual support would be great for running 2 apps side by side.
I could see myself using this in certain situations.
If this isn't possible having a track pad on the bottom with option to lock it to keyboard would also be really handy for "Laptop Mode"