This is great; it's basically either 1) an alternative to Patreon for developers (which is something I have always wanted to exist) or 2) an alternative to Patreon for Patreon creators who are the tiniest bit intelligent and able to actually use GitHub (every aspect of Patreon is bad for creators, so this is an upgrade, except in user reach).

The missing element here is a nice end-user focused browsing experience, layered on top. A user-focused portal which lets you subscribe to projects, sponsor them on GitHub, and see updates, with GitHub behind the scenes.