The way that we think about story handling is that users/business analysts create stories, and when they've bubbled up in our priority queue the dev team gets around to tasking them. As I'm working out how we'd use Mingle, the easiest way to add a bunch of task cards to a story seems to be the card tree view, which works really well for adding a bunch of cards with titles.
What is not immediately obvious to me is how to make it similarly 'quick' to edit the estimated effort required for each task. I'd love to have just the 'estimate' property show up as a editable number field in the task cards in the tree view. Is that possible?