Customizing the Pre-chat form is the recommended approach to ensure that Live Agent chat requests contain enough information for reps to effectively respond. A Pre-chat form is a form that customers fill out before starting a chat session with an agent. The form can collect information such as the customer's name, email address, phone number, reason for chat, or any other custom fields. The information from the Pre-chat form can be used to create or update records in Salesforce, such as contacts, cases, or leads. The information can also be displayed to the agent in the Service Console, so they can have more context about the customer and their issue. Verified References: Service Cloud Consultant Certification Guide & Tips, Set Up Pre-Chat Forms

Integrating a Slack channel for experts to collaborate on complex cases provides a real-time communication platform that supports quick exchange of ideas, files, and updates. This solution fosters teamwork and enables faster resolution of issues that require input from multiple experts.

Path for Cases is a feature that can allow a tier 2 service representative to take over case processing from tier 1 and know how far tier 1 had progressed in troubleshooting. Path for Cases is a feature that allows administrators to define the key stages and steps for resolving cases in Salesforce. Path for Cases can help agents track the progress of each case and see the guidance and tips for each stage. Verified References: :
https://help.salesforce.com/s/articleView?id=sf.path_overview.htm&type=5 :
https://help.salesforce.com/s/articleView?id=sf.path_setup_cases.htm&type=5