I think the ability to complete/postpone tasks from the "Reminders" screen would be great. When you select the reminders from the notification tray, currently you have have to "drill down" into each task and complete or postpone it from there. If the reminders screen had the same functionality of the main task list view (checkboxes and popup complete/postpone), this would save me time.

(Sorry if this has been suggested before, I did a search for "complete from reminders" and nothing came up)