I think being an MP should be a career choice, not a secondment. It should be something you want to do, but it should appeal to people with experience. I think we know by now that people who only do politics, or stumble through over their entitlements into a degree in PPE, aren't the best politicians. A lot of doctors change career, they're not more special than anyone else when it comes to this.
That said, a big chunk of medicine will be replaced by AI in the next decade or two, so parliament might be better than the job centre.