Indeed, would be nice. Would be cool to have a look at the sources and attributes, even if it is not stable yet. A lot of work lies in the preparation of the UI, the shader nodes and general workflow. e.g. the render globals node for Luxrender has a lot of features, all have to be organized well before starting to implemtent the actual geometry, settings an shader translation. This took a while, so the sooner I can access the general attributes, the sooner I can start with the api if it is stable.