Politicians are not usually experts in the subject matter, especially at the city council level where it's a part time job. The real expertise is in the institutional and professional knowledge of city staff, engineers, planners, finance officers etc.
City staff recommend a course of action and the council vote on it, based largely on the professional recommendations of city staff. The range of views and perspectives represented on an ideal city council is exactly what an eDemocracy has by default.
Our system still gives candidates a strong voice and the ability to justify why they think we should make a certain decision, while also making the professional recommendations of city staff available to the public.