If each team controls hiring you will end up with teams that have different standards for hiring. That implies that internal transfers will also need "re-hiring

If each team controls hiring you will end up with teams that have different standards for hiring. That implies that internal transfers will also need "re-hiring". It also implies that compensation may need to vary between teams. I think it promotes fairness to have a committee of people who haven't met the candidate to decide on them from the details given by interviewers. This should be increasing diversity if anything as it relies on objective metrics rather than any hidden bias. The problems cited in the article are that committee members are focusing on where the candidate went to school, and who at FB can vouch for them. By trying to make sure new candidates resemble existing employees they will of course have trouble diversifying their workforce.