It is thought by some people that Interactive Democracy undermines the hierarchy that is so essential for large governmental organisations to get things done. But ID is designed to decide what should be done, not how to make it happen. It is then the role of the elected government to work with civil servants to implement the new directive.
Granted, not everything we may like to happen is actually possible, which is why parliament and government must help refine and define the practicable choices that may be eventually put to the electorate. Remember, civil servants are voters too and their input to ID is highly valued. The more senior civil servants may be well placed to contribute to the public debate, via the media, and influence the overall vote. They may also make suggestions in the first stage of Interactive Democracy (Ideas Engine).