Sorry for popping up this thread, but it seems to be the correct one.
I have no idea if corona is still under development, but if so then I'd be interested in creating a interface for maya.
I use the OpenMaya framework (
https://github.com/haggi/OpenMaya) to implement Appleseed. Have a look at vimeo, there are some videos showing how it works for Appleseed (
).
It worked as well for Krakatoa and it's KrakatoaSR (unfortunatly a propriatary implementation because Thinkbox will not allow me to open the interface to the public) and for an older version of mantra. At the moment I'm working on a interface for Kray, current a lightwave only renderer.
So if there is any interest for such an implementation, it would be an pleasure for me to try it.