I haven't read the full post and may be off current conversation whilst on track with thread. I guess you look at societies biggest issues to consider the range of people we require.
Crime - significant feature including mental health problems, born of lack of attachment and my opinion is that a higher weighting of nurture. Therefore psychology and sociology, criminology subjects become vital in our strategic response.
Maths - obviously the financial crisis requires those with an understanding in numeracy includes accountancy, economics etc
Medicine - all sciences continue to shape the reason we are living longer, also nutrition and exercise so in addition to sciences, the sports science, food technology can assist the obesity and malnutrition issue we have.
Legal issues - obviously law
Technology - computer science
Prevention of war - the need to understand the political issues and our strategic response. I'm sure even the physicists will struggle day to day if we are under attack. We need politics, foreign languages, history in this regard
We will never not need nurses, police officers, social workers, supermarkets, fuel, Drs, education, mechanics, clothes. Whilst much functioning requires science understanding, the other areas also have vital importance so I'm happy that our future politicians really understand the leadership this country requires