I did overlook the global feed, but it's kinda hidden away to be honest. The way I imagine it is rather than a grid of projects on the main page there is a grid of project content - or just one click away through a menu item like "Discover". I'd also like to be able to choose categories, so if I'm interested in RPGs the grid should only show project content from RPG projects.
I also think it's important how the content is presented. I want it to be a grid because now only two posts fits on the screen and the screenshots are too small. 500px does it like this:
6 screenshots fits on the page (and 3 more are hinted at), and as the screenshots are the main focus you're more drawn to click on them. You can also make the sizes of the images smaller to fit more. If you hover over the image you get option to follow, like and favorite.