This is a really good, succinct article. I agree with each of the points you make and would add a couple of other thoughts:
Context
When making expectations clear to staff, leaders should also provide context. That is, "How does the work I do connect to the bigger picture such as organizational, functional, or team goals?" This is very important and helps employees to feel valued and that the work they do is valuable.
Strengths
Helping staff members identify their strengths—a strength is something they are good at and that energizes them. Then, give them more opportunities to work on their strengths.