Hi Ran
We looked at competencies a few years ago but my recollection was it became over complicated for both managers and learners.
We may not be typical users and things my have changed so this is very general over view.
Our online courses are mapped to approved NOS competencies. What we wanted was to use our existing course enrolment set up and manager sign off to populate the competency framework so in addition to course completions the learner and manager could also report on competencies.
We wanted to link competencies to the courses but without disrupting their normal enrolment onto courses.
What we discovered was that using competencies opened up a whole new navigation pathway for learner and manager to learn and which was not very intuitive
As a result we ditched competencies and stuck with our existing course enrolment pathway with a simple PDF download showing the competencies achieved by the learner when they successfully completed the course.
In our world anything that requires the learner to do more than click on a link from their "Current Learning" block and complete a course does not land well !
I hope this helps.
Thanks
P