Hey Robert, a few observations from customers who have implemented us:
1. For orgs that are practising continuous performance management, self-rating/ self-comments might not be entirely necessary
2. Otherwise, orgs are inclined to do self rating since it gives voice to the people who might otherwise feel that their ratings were decided unilaterally
3. If you are practising continuous feedback and you are confident that 90%+ managers would know about how their DRs have put in effort, performed, etc. removing self-rating/ self-justification might be easy