If our focus shifts from mere results to the sustainability of how we get them, heroes become a problem. Key man risk. Succession issues. Development of the next generation. Heroes suck all the oxygen around them and, in the process of delivering results, they remove possiblities from the organization.

Sustainability renders heroes inadequate.

And that's a hard choice... do you choose

results over sustainability
or
sustainability over results?

That is a principles based decision. And that decision will have implications on how your organization is structured, is staffed, and what behaviours are allowed, favoured and rewarded.

Actually, don't wait for an aswer, simply look at the profile of the people that have suceeded.