user frendly

Would be nice to have a feature that when a Table is selected on the Diagram, the relations lines would be hightligthed or color changed, showing different color for type of relation and also
Global notes are Ok, would be nice to have a "+" icon or similar on the table header to add/edit a note for the table(When selected) and also shows an icon that the table has a note and click on it to show/edit the note, something like iphone badge numbers(when not selected).