If you look at the Profit and Loss Statement, you see the actual spending for each account and/or catergory in a given period of time. When you add a column to the right which shows the budget for that account and/or category, you have a complet report about the status of your spending.
An extra column showing teh percentage of spending would also be nice.
When you have more than one budget defined, the ability to select what budget to show in the "Budget-column" would be necessary.