Thanks for the feedback. I don't think witness responsiveness has ever been, or was in this case, an issue but it certainly might be worth considering. It's important to remember that any time that is spent developing one solution is time not spent developing another. As Steve Jobs famously said, "People think focus means saying yes to the thing you've got to focus on. But that's not what it means at all. It means saying no to the hundred other good ideas that there are."