To prevent customers who use abusive language from starting future chat sessions, creating an IP blocking rule is the recommended feature. This allows administrators to block specific IP addresses from accessing the chat service, effectively preventing abusive customers from initiating new sessions and maintaining a positive and safe environment for both customers and service agents.

Explanation
A case snapshot report is a report that shows the values of selected fields at different points in time during the case life cycle. You can use this report to see how long a case spent in each status and what changes were made to the case over time. This report can help the support manager to research the situation and identify the causes of the increase in average case age. Verified References: Create Case Snapshot Reports

Explanation
Filtering on Closed When Created equals true is a report change that can show first call resolution. Closed When Created is a field on the Case object that indicates whether the case was closed when it was created, meaning it was resolved on the first call. Filtering on this field will show only the cases that were closed on the first call. Verified References: : https://help.salesforce.com/s/articleView?id=sf.case_fields.htm&type=5 :
https://help.salesforce.com/s/articleView?id=sf.reports_filtering.htm&type=5