Here is a wonderful proposal for a method of disposal of RLMT - You can employ anyone you want as long as the starting salary is twice the National average, this system or similar i believe is in place in other parts of Europe. The UK has the RLMT exemption for the high earning route at silly money compared to twice the National average wage.
There has always been one successful way to create a barrier to low end tier 2 migration - cost. No matter what has been tried the bottom line to tackle abuse has been the same method- push the costs up. Be it salary, IHS, skills levy ...
Let’s have a free for all at £60k salary and it stops the nonsense of non genuine vacancies dead in its tracks. Downside is that it kills off student to employee route as it is not economic for employers to take on inexperienced workers at such a high salary. Unless there is say a three year window with stage increases to salary per year getting to say £50k at the year three for students.
There has to be exemptions for a defined number of shortage occupations - mostly for government or local government roles / teaching roles & professional health care roles. The rest - not so much. Chefs - yip at £60k... not even bothered with experience at that salary