Lots of cries of 'why aren't they taught X at school, it's really important' with the response 'what would you like to see binned to make the time for that?'
I would like to add all aspects of managing finances - mortgages, credit, car finance, gambling, loans, costs associated with owning/renting a home, savings, investments, interest rates, the general economy. I know it's supposedly done a bit in PSHE, but I'd want it done properly. With homework and tests.
In order to make space for this I would bin: KS3 Drama.
You don't have to bin a whole subject, so for example you could bin the study of poetry in English, or anything involving circuits from science, but you can't bin the study of oxbow lakes from Geography and replace it with learning Latin - they should take about the same time.