Yea, usually in open source projects, project management gets ignored more than it necessarily should.

A roadmap detailing goals and outlining MVPs would be very helpful to developer, albeit it can take away from the excitement of not done correctly. Determining low hanging fruit and work that is good for new contributors early one can make a big difference. Allowing those with seniority to tackle the important and hard core featureset while still getting fixes and small improvements out the door.