The problem is when exporting from Moi, the mesher produces a lot of edges. Some of them don't need to be creased as they are part of a gently varying surface, some do ( IE, the edges formed by 2 intersecting surfaces which do not have G2/G3 continuity? ).

So you need to export with a decently high polygon count so the subdiv surfaces approximate the nurbs surfaces when subdivided. But this high poly count makes hand selection of edges somewhat tedious.

I know it's a limit of the OBJ format, but exporting in a way that keeps sharp edges sharp would be nice. Whether it's doubling certain edges up in the OBJ export, or exporting a subdiv format that supports creases (collada), I think that this would be useful too.

Might be something to consider for V2. :)