When a product has multiple fancy products available, it would be great if the variations availability could be made dependent upon which fancy product is selected. For example, the way you can "change products" in your demo hat: http://fancyproductdesigner.com/product/hats/ that could be combined with your demo "Sneaker" at http://fancyproductdesigner.com/product/sneaker-mspc/: so that certain variations in MSPC are only available for certain products within these views (eg, another product under sneaker called "slip-on" and when that is selected, the "laces" variation goes away). I think that would allow people to easily sell multi-tiered products or support different variations on the same product with ease.
Yes~I think this will really be a great feature to have!!!