To avoid creating unnecessary case-related properties and views:

Work Pool Level Definitions: Define most properties and sections at the work pool level to ensure they are reusable across multiple case types. This approach reduces redundancy and simplifies maintenance.

Data Types: Create data types that correspond to the case type when necessary. This helps in organizing related data and promotes reuse.

Data Reference Field Type: Use the data reference field type in the case type's data model tab. This allows you to link to existing data types without duplicating properties, maintaining data integrity and reducing redundancy.

References: Pega Platform documentation on data modeling, work pools, and data reference field types.