In my opinion the CF has put the cart before the horse on NCM PD. The word has been out for ages (NCM 2020) that you need PD to be competitive, however there has been no steps taken to institutionalize PD on the NCM side. As a Pte/Jr NCO I saw Sr NCO PD as them getting together at the mess to get a briefing on something for a bit and then hit the bar, or battlefield tours. In these cases the depth of PD might have been a bit thin but there was exposure to a variety of military subjects. Now that it has been decreed that PD is needed there are two main options, post-secondary education (of which OPMEs are a form), or SLT. There are a few long course (ATWOP for example) that count.
Except for SLT, once you have completed some form of PD you get the benefit for it for that reporting period and then it is done. There is no incentive to complete them quickly or to attend a year long course other than personal satisfaction.
On paper someone who has completed all of their OPMEs, has a long course qualification, and is bilingual is at a disadvantage the year after that is all done, compared to someone who is bilingual and takes one random post-secondary course every year. Hopefully the merit board can see past that, but on points the person who takes Basket Weaving 101, 201, 301, and 401 over four years is ahead of the person who has hard military qualifications.
Now with OPME effectively closed to NCMs, the routes of gaining PD that is guaranteed to be relevant to the military is SLT and long courses. Both of these options have very limited attendance.
Unfortunately there is no way of reflecting subjective PD other than in the narrative portion.
For my trade, I would consider a Cpl/MCpl to have undergone PD who has researched a military subject (trade related or not) and delivered a competent briefing on it to an audience of their peers. However there is no qual/MPRR entry that can reflect this, so you've got to state it in the narrative, and there is no enduring record that follows that member to reflect the knowledge and competency they gained from doing that once they are a WO and being merited as normally only 3 years of PERs are produced at the board.
One option would be to have box on the PER, Underwent PD (Yes/No) and a small text box saying what it was. Could be abused, but hopefully merit boards can watch for that.
A question for the officers, what is considered PD for you for those years where you are not attending SLT? In the Army, ATOC is required for promotion, correct? In that case it is not really PD. If it is considered PD and is required, then on the NCM side we should consider every career course (trade or leadership) as PD, which would help things out.