Good point. If the metadata is really problematic, the automatic categorization would work for default fonts only. And perhaps for those fonts with no issues during AD's categorization process. For the rest there might be another category, for instance 'uncategorized'. When user opens AD after installing a new font, he is asked if he wants to manually categorize fonts which were not recognized.
I believe some order in list of fonts would really help designers be more effective and a bit more conscious when thinking about type.