"Can't pass? Don't get the job."
I think the problem is defining the job.
For civil servants, requiring some sort of qualifications in whatever it is they are administering sounds like an excellent idea, perfectly consistent with normal employment practices, the only barrier is that all those PPE and Classics graduates would have to retire because there are no jobs for those, ahem, skillsets.
For politicians, getting elected pretty much *is* the job. Sadly, with party structures being what they are, that's a terrifyingly low bar. Perhaps we need to re-think what their role is once they get into office. I like the principle that we can put *whoever we choose* into a position where they have oversight over everything the experts do. I don't like the fact they tend to grab hold of the reins of power and start telling the experts what is and isn't possible.