Constructive Criticism/ Devilishly Advocating:
In agreement with root comment, it's much saner to target employers, which you seem to agree with. Therefore, it seems like presentation of the information doesn't really matter to employers looking to fill a role when compared to how easily searchable, filterable, and readable (both machine and human) that information is.
Therefore, having the service become something more of a "General purpose learning tracking" tool feels at odds with this. Inherently increasing the noise in your system and making it harder for employers to find experts that possess the skillset to meet their need.In other words, it seems like general purpose accomplishment tracking would increase the noise (as presented to employers) and diminish the signal employers are willing to pay for. Have you noticed this issue or given any thought to how to handle it?
Of course, I'm not privvy to your back-end or what you're presenting to employers; the above criticism was just my first thought based on your reply.