The key deliverables provide a roadmap for the team and estimations of completion data so the team can see if they're on track or not. This roadmap is typically aligned with the project phases including Define, Measure, Analyze, Improve, and Control. You want to make sure that any of the key deliverables within those phases are also included with estimated completion dates. This helps the team answer "what are the key activities?" and "when should those key activities take place?"