I would love to be able to give the categories a tag (not the transaction) so that categories can be labeled, searched, and grouped by something other than just the 'parent category'. For Example: 'Food' - Parent category Groceries, Restaurants' - Sub categories Groceries (Tag=Essentials/Needs), Restaurants (Tag=Wants/Discretionary) Tags can be used for the sub categories to define things like budget reports for 50/30/20 budgeting. With tags we can easily use blocks to group subcategories into different sets outside of the parent category to show trends for big picture budgeting. With the tag feature we would also need the ability to select the tags in blocks as a filter for both all category types (income, expense, transfers etc)