MakerBot Print is our newest print-prepration software, which supports native CAD files and STL assemblies,
allows you to interact with all your printers via the Cloud, and many other exciting new features.
Not sure, but on the picture, it could be the raft, not the supports. Overhangs get better with cooling duct, multiple walls, low extrusion temperature and reasonable print speed. But you're right, if the piece start with a curve, we should be tempted to use supports.