I'd just like to add my vote for this feature. I can't speak for other people, but I don't find the idea of a filtered list at all confusing – it's exactly what I got with my "Do Now!" view in OmniFocus.
Indeed I find the interface more confusing with sometimes 3-4 levels of hierarchy above every task – what should be a list of 6–10 items can take up to 30–40 lines, more than fits on a single screen on my laptop
And also just a note that David Allen recommends writing out tasks as self-contained active statements
Lastly, may thanks nonetheless for the script – my problem is I don't know what to do with it? Do I put it in TaskPaper as a saved search, or what?
Any chance this could be added as a selectable option (well buried in preferences, if you like!) for those who like to work this way?