It appears that the main purpose of putting medium-skilled workers on a 15-year route to settlement is fiscal, because medium-skilled workers are, on average, lower earners. It is odd and unnecessary to use RQF skill levels as a proxy for income when making decisions about settlement, rather than assessing income directly. Making decisions in this way will lead to high earners in skilled roles being put on longer routes for a reason that is fundamentally arbitrary. (Conclusion, Paragraph 35)