Well, for tasks I want categories, priority, subtasks which can be hidden or collapsed. I want to be able to display all tasks, or just tasks from a certain category. I want multiple options for sort order (priority, category, status, description). Also if it could have an extended description (only seen when you click on a specific task) that would be useful.
For calendar I want to be able to create appointments, recurring appointments, timed reminders, etc. There should also be an "all day" appointment type.
That's all I can think of for now but I'm sure I'm missing something.
I'm willing to look into each option. If I could just get a list of all the options that would at least be a starting point.
~ Justin