Please allow the ability to create custom attributes (by data source type). For example - I would like a review date field for reports so I can allow report owners to periodically indicate they have reviewed existing reports and they are still valid and tested. To do this i need to add something other than the modified date. I may also want to have a marked for deletion indicator (perhaps a date) to show that something will be removed on a date, ex I need to keep a table that contains data for a period of years I can track the date I can legally delete the content.
Shannon Lowder commented
This would allow end users to collect more information than the designers have planned for. This would provide excellent extensibility in ADC, as well as set up for future products that could consume the ADC metadata and automatically generate SSIS/ADF assets!