Well the solution for this would be that there is an ascom driver for dslrs that can use the shutter release cable and picks up the image via standard camera/usb picture protocol ... Yes it would limit settings like iso and live view, but all camera's would be supported, even new ones from day one ...
Another possibility is that now that windows will support "Unix" GPhoto gets ported and used like on Ekos/indi ...
/Yves