Who will benefit from faces?
Anybody who is tired spending hours of trying to get your project data into a software tool, that offers limited functionality. In faces project plans are defined by simple python programs, which are indeed plain text files. Creating and restructuring project plans is much faster than any grid or formular based method could be. The whole concept of faces aims to reduce your time, you have to spend for working on your project management tool. As project manager you need your time for managing your project, not your tool.
