I agree with jethro, this is a bit of an open-ended question. Suggestions:

• Move this source to a Subversion or CVS repository somewhere if you can. That way one doesn't have to expand all the files to see any one part.
• From an online tutorial I see the Rails version can handle namespaces, so perhaps you want to add some kind of package capability. I didn't see anything like that in the included Pakefile.
• A tutorial in POD format somewhere in the kit would help.

This is an interesting project. I would like to see how it progresses in the future. If you could give it an overall version number that would help as well. Rename your archive from pake-final.tar.gz to pake-version-0.2 or something so we know what we are unpacking.