When shooting tethered it would be a good feature to be able to use Green Screen as a background that C1 will automatically remove (selected by color with a range) and replaced by a given background picture (such as done in weather on television).
Should be easy to impement and give clients an immediate view how composition will look like.
Current workaround
Exporting to Photoshop, Select color range or select subject, delete selection, add layer with new background picture and merge to final picture