The team you build is the company you build.
The agenda should be crafted by the employee who reports to the manager not the manager.
Don't accept the excuse of complexity.
The key metric of whether you've succeeded is what fraction of your employees use that dashboard everyday.
Possibly the most important thing you do is actually edit the team.
The key to culture is it's a framework for making decisions. And if it's baked into your culture, people learn how to make decisions across that culture without you ever saying anything. You never have to really do anything except watch and promote and move people around.