In reply to James.

Most themes there are broken and incompatible with recent version of WordPress.

Even in situation if 10% would be usable, with current search system in the directory and preview, good luck to install and try them all 🙂

These themes which relatively works are “free adverts” for theme’s businesses.

If lucky after hours of trying, still majority of themes are bloated for no reason with clunky “features” and lack just basic functions what a themes should do – show a content on a screen.