Currently, it appears that when a course assignment is used as an evidence requirement, a grade of any sort marks the requirement as graded and therefore completed in the eyes of the portfolio. However, when it comes to an evaluation portfolio this might not be the case. If a student receives a very low score, that might not meet the benchmark for the portfolio requirements.
It would be beneficial if either a minimum score requirement could be set on the portfolio for these kinds of requirements, or if a separate marking of complete/request revision/not complete could be used, similar to the review of the other requirement types.

The screen shot shows the example assignment as "graded", the student as completed, yet they earned zero points. I would not have considered this evidence adequate to consider the requirement met, but I do not have any way to indicate that in the portfolio itself.
In addition, it would be beneficial if the points possible on the assignment could also be displayed in the Submission Details panel, so that there is a value to compare the points earned to.