Even if they did make it, there's a lot of these node applications (they mentioned Graphite, Pixieditor is another). Makes me wonder if there was some Siggraph talk inspiring this, or if node-based workflow really does make a big difference. Or maybe similar library/toolkit usage?
That being said, I've asked about this* a few times and never even get a response. So it makes me wonder if the supply outpaces the users on this one. Either way, there are 15 competing standards node-based everything editors.
* and if certain workflows could work... like SDF textures, polygonal font creation (especially color, .otf result), indexed vertex colors+mesh library