[brianogilvie]

Just a quick P.S. to my post: I think the "Available" filter should filter out tasks that are unavailable for two reasons, not necessarily mutually exclusive:

1. The task is not the next action in a sequential project (currently implemented).
2. The task has a start date that has not yet arrived (not yet implemented).

The "Remaining" filter, on the other hand, should show both of those kinds of tasks. If that's what you have in mind, bravo!

My reasoning: for doing (mostly in context view) I would like to see either next tasks, flagged tasks, or tasks that are available for either reason (next in a sequential project or the time to do them has arrived). For planning (mostly in project view) I would like to see remaining tasks even if I can't yet do them for either reason.