I want to be able to mark a task as 'Starred' a.k.a. 'Flagged' and 'Favourite'
That gives additional control over task filtering.
For ex. I want to focus on a given set of tasks, so I click on the star just before the Task Name to make it 'Starred', I do the same thing for a few other important tasks.
I select a new Task Filter/Status: 'Starred tasks' and voila
This is a common feature in multiple task managers: Things, omniFocus, Toodledo to name a few...