Data fixtures does a good job of providing inheritable static fixtures. I've implemented an alternative, factory-based approach in Xi Fixtures, which I've found to often be more flexible and less fragile than static fixtures. It's essentially a FactoryGirl clone for Doctrine.
Is this relevant to your interests? Do you feel the projects should merge? Or maybe just mention each other in their readmes?
While your project seems good, it is still a very separate project, I do not believe mentions of it belongs in this project. It would be best to list that kind of alternative in project directories.