Hello Pier.py,
a agree too, it would be nice to be able to use maxwell from blender. An exporter is on my project list but I don't have time to start it now and I would like to better test sunflow and other open renderers before...
Your name let me think you might be a python master

, would you be able to contribute to an exporter ? There are python script exporters for sunflow and other renderers that can me re-used, but a lot of MW API libraries to convert..
Or we could try a cpp exporter using maxwell api without conversion, could be a lot easier to update for future maxwell versions..
Victor