I agree that roadmap is very detailed which make people understand and know the next step that the team will do for the project. It can totally shown in there roadmap the exact goals of dates when to achieve the finish line. Hope the team will always gives updates about the project because for sure many are keeping track on this project.
That is the purpose of the roadmap, a sort of timelime for the project from conceptualization to realization. Most of the investors will look upon the roadmap to see if the project is on target with regards to timeline. A good project should have a timeline.