I'd like to suggest a forum; something right on the main page. This would be a place where someone looking for software could post what problem they are trying to solve and those with projects or who are knowledgeable about a project could respond.
In the past I've tried to find projects when I had pretty unique needs. I'd start with a search, or worse wandering the topics, hoping to find something that clicks. Often the description doesn't tell enough of a story. I would end up downloading a bunch of stuff, just to install it, and see what it really does.
It so frustrating knowing there must be something out there that does what I need, but I can't find it.
The forum would be like the Project Development Help Wanted, in the sense that a developer offering to code doesn't have to wade around looking for a project. They can just raise their hand and projects will offer opportunities. Someone looking for software should be helped to find the right project too.