Site-Wide Categorization - (COMPLETE) Categorization that can be used by any package, not just those based on content-repository.

Skinny Table - A data model that provides storage for dynically defined columns of ACS Objects. This would form the foundation for users to define their own objects, for example to build a knowledge database.

Metadata - Metadata can be used for automatic generation of forms, lists, and other user interfaces for applications. This is also a key component in a knowledge database.

Performance and Scalability