allow this path to be specified (or additional paths specified) in the .zfproject.xml file. This would also allow for project-specific providers.
This is actually a chicken-egg problem. The .zfproject.xml file is not loaded until all of the providers have been loaded, specifically the Zend_Tool_Project providers. The overall benefit there is that Zend_Tool_Project consumes Zend_Tool_Framework, what this ultimatley means is that you can create your own cli/command system out of Zend_Tool_Framework without every using Zend_Tool_Project.
Its basically a separation of concerns. The .zfproject.xml file is for Zend_Tool_Project and has little to do with Zend_Tool_Framework which is where these types of problems need to be solved.
-ralph
