Agreed those are arbitrary point. And so is every hiring process. Pick some attributes that helps you define good people, good business, good tech and that's it. At the end of the day, it is a subjective process. I bet whatever "objective metrics" we come up at the end has some "rating" element in it which is subjective. Acknowledge the arbitrariness within the team and to the candidate in my opinion helps bring more fairness to the table. And also why I think it is worth less to overly religious over the hiring process