Engines - whilst it may be the way of the modern world to have RTSA exclusively manned by engineers - that stops working when they make decisions about piloty things because they think they know better and won't ask an operator. That goes for aircraft configuration, role equipment, avionics and general ergonomic layouts of cockpits.
In order to free up aircrew, many aircrew posts within PTs and the like were gapped or removed so the aircrew input to many areas of airworthiness was lost.
As for the Duty Holder chain, we are constantly told that they are 'managing the risk' - this is nonsense, the people managing and dealing with the risk on a day to day basis are the crews but it gives upper management a warm and fuzzy feeling that they have taken responsibility.
As another example of how mad the world has become - colleagues and I who have been QHIs for many, many years now have to do the DTTT (defence train the trainers) course before we are deemed compliant with regulations. Accreditation was only provided in 2011 for the CFSH course and all of those who passed it - and instructed on it - before that time now have to lose a week of productive flying training to learn classroom skills that are wholly irrelevant to that flying training - just to keep the educators empire happy and tick some more 'safety' boxes. How did we ever manage to produce good quality aircrew without the extended INTROSH course?????