Thank you, Tara, for sharing this comment. I didn't want to be the first to say how useless I think such 'mushy' rubrics are. The descriptors you listed reminded me of high school computer generated report card comments such as 'good work' and 'improvement needed' (not to be confused, of course, with 'some improvement needed').
For me the 2 key criteria for judging the effectiveness of a rubric are: (1) [from John Hattie] whether it provides 'actionable' guidance to the learner, i.e. specifies what or how to improve, and (2) [from Bonnie Mullinex] reliability of scoring by other insructors or by students (either or their own work or that of peers).
I think this Alberta rubric for assessing online course quality fulfills both of the above. Courses are judged as meeting all 'Essential' requirements, 'Excellent', or 'Exemplary'. Most standards offer criteria at all 3 levels. A few such as Mechanics of Writing (p.10), have only 1 level, the implication being that a course which does not have the Essential elements is not ready for release.
The biggest problem with the Alberta model and alternatives shared in this forum is that they can be very challenging to write if you have not previously made yourself spell out in detail the measures by which you differentiate between success, the lack of it, and whatever stages you've put in between. On the other hand, the potential to transform assessment 'of' into assessment 'for' and 'as' learning is enormous. Using this kind of rubric puts the onus on students to make the improvements required to elevate the their standard of work and relieves instructors of the need to dedicate hours to correcting papers and making hand written comments. I think a powerful use would be create checklist and have students submit self-evaluations with their work. Comparing student to instructor assessments would give the instructor useful feedback about where the students need more help. The students would gain insight from discovering the differences between how they vs. their teachers see their work.