One of my main concerns with PHP has been the lack of ecosystem. Almost all libraries and tools are written with a specific framework in mind, creating separate ecosystems around Drupal, Zend Framework, Midgard and others instead of an ecosystem benefiting all users of the language. There have been efforts at this, like PEAR before, but they have mostly stagnated.

These thoughts were spurred on by a post about the changes happening with eZ components (into Zeta Components) and how they can help reinforce the strength of the language rather than the efforts of one specific project's ecosystem.