The Web is too big for a single large directory - but a network of small directories seems promising. (Supported by link-sharing sites like Pinboard and HN.)
Yes! But, of course, for directories outside of Wikipedia. This is very interesting for its classification structure. It's so typical of Wikipedia that a 'master list of lists' (by my count, there are 589 list links on this page) contains lists such as "Lists of Melrose Place episodes" and "Lists of Middle-earth articles" alongside lists such as "lists of wars" or "lists of banks".
The Web is too big for a single large directory - but a network of small directories seems promising. (Supported by link-sharing sites like Pinboard and HN.)