Certainly need more developers. But I actually think at this point the marginal value of 1 more PM would provide more value, as a great PM can unlock a lot of untapped value in a project that already has multiple developers. When I use PM in this context, I'm referring to what I'd call a "decentralized PM," a person who helps a FOSS project get more organized, coordinate between other related projects, helps recruit more developers to the project, helps find designers to help the project, creates a plan to grow adoption of the project, and speaks to users of the project to learn more about their needs.