The point I was making was that the syllabus IS IDENTICAL as far as wear and tear on the aircraft is concerned.
Experience of he Eurostar and other similar aircraft is that it is possible to build a robust trainer down to a very light weight but you need a good design and the airframe may cost more to make. This is easily countered by the improvement in fuel economy. The 150 comes in below the CS-VLA weight anyway so many of these aircraft are not that much of a step from 1955 if you only consider weight. The SC has, in the UK, had a lot of issues, but one iffy design does not make the design code a bad choice.
Rod1