I am a big fan of your books, I admire you style and rigour, that is why I would so much like to get your feedback on something that my friend and me have built.
You might have seen our posts on other quant finance forums. Basically, what we have built is a new way of interacting with Excel files. You can control inputs to your formuals using sliders, thus generating continuous flows of data into formulas, and our program collects results from your formulas and presents them in wonderful (at least we hope so) dynamic charts, so that you can easily observe dynamics of your model. You can see video of our product at www.convexdna.com. What do you think about it? Do you see this product enhancing transparency of models and facilitating understanding of model risk?
Any comments are very welcome, as we are a small start-up and can implement good suggestions fairly quickly.