I agree. Leads and other management roles are more difficult to peg but usually this is known simply by the person's role. A good dev lead could be judged by th

I agree. Leads and other management roles are more difficult to peg but usually this is known simply by the person's role. A good dev lead could be judged by the number of code review comments or % code reviewed. Since a lead is also responsible for the team, their performance could be judged by overall team measures such as % test coverage of the overall code base, amount of time a ticket sits around etc. The team's metrics may become a way to judge the lead? But I agree, it's all imperfect. I also don't think these metrics would be the only criteria by which someone is judged.