[Mitch Wagner]

Put me down as another vote for manual sorting and context view. I'll be emailing the support ninjas momentarily.

And now for my workaround: Sort by "Changed," and then add a space to the end of a task, or delete a space if it's already there. The affected task will float to the top of the list. Repeat for any other tasks you want at the top of the list.

This is a few more clicks than ideal, because it'll be natural for you to do the most important taks first, then the second-most-important, and so on, and when you're done the most important task will no longer be a the top. But it's not a huge amount of work to make another pass to get everything in the right order.