- Project managers who were "on the team's side", at least so far as the team could tell. This. I've found this so imporant in my time. As far as I'm concerned

- Project managers who were "on the team's side", at least so far as the team could tell. This. I've found this so imporant in my time. As far as I'm concerned, if a manager can't keep their own team on side, they might as well not bother. When the manager is popular and people unite around them in times of stress, then everything will work so much better. From there camaraderie and esprit de corps naturally starts to follow, especially if the product manager personally hired many of the members of the team and starts to build a tradition. If I were to add something to your list it would be accountability, but not blame. If somebody does something wrong, both engineering wise but also in soft skills, its important that figures of authority take the time to both explain where the person went wrong with a view to trying to understand why the person made the mistake, but also visibly put into effect processes for the future to prevent this kind of thing, either by adding it to the onboarding training or with some kind of code review or even just make sure everyone in the team knows a key piece of information that person may have missed.