We are also looking for a more interactive visual view. For example, task bubbles with higher priority should float to the top with any associated groups or tasks. If similar priority items are displayed then the next priority criteria should be date created with older propriety tasks become first over newer ones. On the project page the priority bubble float should be reflected in the thumb nail of the project along with a %complete number. Projects with pending deadlines should move ahead of other projects. This will help not only manage what needs to be done but will help to visualize what order things need to be acomplished.
We are currently reviewing the application and looking at enhancing the visuals within DropTask.
I would absolutely love for urgency to control how high a task floats within its group. It would greatly help me organize my priorities!