@TTT
They obviously will not as it is diametrically opposed to the idea of employee portability, written into Schengen.
Which makes me question what on earth Schengen was in aid of? Is the idea that whichever country has the best educated - minimum of bilingual - elite can freely move about, poach all the top jobs in Europe and, like some paranoid "New World Order" conspiracy, not only send money back to Das Fadderland, but also start shaping laws and business agreements to the benefit of "home team" companies and so forth?
Somebody, somewhere, was meant to gain from it and my guess is that monolingual, "never leaving this country" Little Britainers were intended to be the ones who lost out, in the long term.
I'm saying all this on the assumption that a points system would have to be based on the Australian principle of "sorry, we already have your skillset in abundance; we don't need you; kindly go away". Applying that very logic should prevent bulk movements of low-skilled workers from one member state to another.