Ideas for revamp of module

I spent the day trying to come up with ideas for a new syllabus for the two modules I have been assigned as coordinator for the next academic year, one on  Urban Environment and Society and another on Plants and Site Planning. The previous lecturer who had just resigned focussed too much on urban planning rather than urban and landscape design. I also feel that there is not enough taught on the local culture, history and governance. I feel that this is important in order for the students to come up with a good design for a public open space or a public place. I also decided to remove topics on Urban Planning and include Urban Design Topics and Theories instead. I did not realise that teaching involved so much paper work and planning. I now have to modify the module aims, lecture series, assessments, syllabus, hours allocated to lectures and tutorials FOR EACH MODULE.