Thanks for the Article Jeff, might be an interesting tool for people that have to work on designs that they did not develop, or if they don't own a Hybrid Modeler like 'all_trades_jack' mentions...
But for people that design their own products from scratch, there is no doubt in my mind that they would want a history based modeler. Of course that should be one that keeps all previously chosen parameters accessible to future definition and change. If hybrid dynamic modeling was used to modify an existing design the change will hopefully become a parametric history based 'change-feature' until somebody goes and exports to a simple geometric solids description file format and effectively looses the history information again. But lets be aware that having to describe a geometry will almost certainly take much more storage space than to only have to store the object tree of the historic creation and modification of 'features'. And don't even imagine having to modify applied patterns repeated many times, or changing your mind about an earlier applied feature! So if you want to be able to reuse your designs, create parametric variations and exploratively try out things; don't flush your investment! Keep your History!