I think there are several ways to enhance and extend the current Upcoming calendar view. Specifically:
- Add totals based on time period - next 15 days, next 30 days, etc.
- Add an available balance - total - pending debits - similar to 'safe to spend' feature from Simple or the 'money bar' feature from PNC Bank
- Add support for showing transfers - like credit card payments. The budget line items should come from the credit card transactions, but the bill payment should show up as a pending debit based on the due date