Roll up from task to project

It would be very helpful if project budget and projected end date could roll up from the granular to the top level, so that the project end date could be defined as the due date of the last task (or the latest due date of any task), and the project budget could be the total of the estimates. This could then be locked down, but when creating the project it's a little weird to have a disconnect bewteen the granular and the overall.