Adding incomplete tracking to habits

The task score and task graph for a particular habit are quite powerful for organization as well as success tracking of an individual habit. It would be helpful though if there was a way identify roadblocks to accomplishing habits via incomplete tracking. Built into some task managers are the ability to query what was the cause of an incomplete habit or task. Might be a nice add on in the [ ] format to add an option to query why a task was not completed the next day or some other time frame at the users discretion with a drop down list determined by the user as roadblocks e.g. high stress, appointments, not eating, not enough sleep, etc. An incomplete status (if dichotomous variable) or attenuation of reps, time, etc. (if ordinal variable) would trigger this at said time frame and then analysis later would allow identification of roadblocks to completing habits. Once the user identified the roadblock it would development of the habit in a way that was more likely to succeed.