How do we Reward / Rank a Development Manager?

In shops where review and ranking is a requirement, there is an obvious need to also review / rank the Development Manager. What should you look for when ranking a Development Manager:

The most obvious result of the work of a good Development Manager is that the organization (trains, teams) are seeing good development of people in response to the demands being seen.

Impediments associated with people Development, many not considered “safe” discussions in the traditional organization, are being worked and resolved.

People want to work in the organization and with that particular Development Manager.