There seems to be a minor issue with the next badge that is chosen on the user profile. On Meta Stack Overflow I had just gotten the Electorate badge and the next badge the system chose for me was Custodian. The problem with this is that I do not have the necessary reputation in order to earn this badge on that site. Would it be possible to put in a check to preventing it from choosing a badge you don't have the ability to earn?
Custodian will no longer be suggested/auto-tracked as an onboarding badge on child meta sites, since they only have a subset of very high rep review queues.
This change will go out in the next build, probably in a few hours (but not by me, I'm going to bed :)