Typical GTD software design plays only incrementally with the notions of GTD--context, next action, etc.

It becomes very easy to see the next action and to attempt it--but what if we aren't able to complete that next action? How many projects have you had, how many ideas have you had, that just withered on the vine as a result?

A welcome addition to Omnifocus would be the subjective measure of a project. Indicators, perhaps as sliders, which would easily permit you to answer the following questions: How strong is your commitment to this project? How satisfied are you with how this project is going?

It would be very helpful in terms of plotting over time what our goals were, how much we enjoyed pursuing them, and how strongly we kept to them.

In time, these plots would help suggest better decisions to the user, serving as guideposts as to whether a next action is too large to bear, to reflect an individual's growth in some skill (think of tracking your mindset in plot form from your first intrepid day of jogging until your first marathon only 9 months later), to reminisce on the joys of accomplishing difficult goals or to caution the user in light of a pattern of poor outcomes.

Omnifocus, in this way, would be a fairly sought-after tool for building willpower through conscientious action. It would also become quite valuable to psychologists, physicians, and trainers, who are attempting to track their patient's progress.