I'm using tasks (ToDo's) quite a lot for different purposes and reminders. To have a better view, I use categories (with colours) for different task areas.
Some examples for categories:
personal, shopping, holiday, authorities, finance, healthiness, contracts and so on...
Has Thunderbird Tasks the possibility to group tasks by category?
As result, the view of all of the task's could look like this:
a) grouped by category
b) sorted by priority(first)
c) sorted by date (second) {this could be beginning or finishing date}
Category "Holiday"
- Task 1
- Task 2
Category "Personal"
- Task 4
- Task 5
The "Grouping by" view helps to navigate more comfortable in large lists. As additional feature it would be helpful to collapse or expand a category and the tasks beneath.
Annotation:
I moved from Windows/Outlook to Linux/Thunderbird: I found the usability from Outlook very helpful to manage data (emails, tasks, contacts, personalized views).