So the OSD-thing is a no-go for Moving Pictures, since it's apart of MP itself.
But the second idea is still an excellent feature. It's still two-sided: Needs to be able to filter movies by estimated time of day the movie ends and show in the Movie-info estimated time of day the movies end. I am not sure if these are excactly the same.
And if it can be done. It is a very dynamic piece of information to filter by, since everytime the time of day changes, the estimated time also changes.