I've have assorted shows listed here (Web and App) that I have no desire to continue watching. As best as I can tell there is no way to remove shows from this list. The PVR has a similar problem with the Home screen and continue watching. The only way I've found to remove shows there is to clear the viewing history and that removes ALL shows from the continue watching list.
Thank you for sharing this great idea. We will look into this with our product team and let you know if this is feasible!