Deadline Date

I feel like I would get more done if I had the ability to have a deadline date right next to the task. Most of the time, I'd want to add a task for when I would like to start doing it, but that's not necessarily when it will be and has to be finished. I think it would help me accomplish more to be able to see that a task has to be done by a certain date or even a countdown that would tell you how many days you have left.