On the RCM Inventory, we would like to have an additional field that enables assignment of a Dashboard Profile custom report that can be used to display information for a selected reconciliation. The report would be launched from the Reconciliation List detail panel. Different reports are required for different reconciliations. The Inventory assignment would determine which report is launched for each reconciliation. The attribute should be a time-based attribute. Instructions would need to be provided as to how to pass the Reconciliation ID as a parameter into the report.
I wouldn't recommend modifying the tables to add additional fields. This can cause upgrade problems in the future as OS would not be aware of the modified table structure. I would recommend putting in an enhancement request for this.