Classification of computers by their environmental impact and upgradability is a good thing. Classification systems designed to encourage manufacturers to make environmentally preferable products do exist, however, the most popular environmental rating registry - Electronic Product Environmental Assessment Tool registry (EPEAT) - is in the pocket of the companies that it purports to objectively classify.
To combat new drugs, such as “Bath Salts”, specific new laws are being passed that contain catalogs of molecular compounds that are now banned in the US. As soon as a new law is passed, chemist are able to change the compounds to be a different on a molecular level, but still have the same psychopharmaceutical role. The assumption is that this new compound will eventually get added to the banned list, however the scope of these derivative compounds are huge, from the hundreds to the thousands depending on the compound.