Ok so If I understand this right....
The options I have is
1. remesh the object and then try to subD it or the remesher can create a smoother surface? Maybe Rhino shrinkwrap can accomplish something similar?https://www.youtube.com/watch?v=ETeytCD7HTA at 4:06 or is this basically the same as the quaremesher?
2. Try to redraw the result in a polygon based software so I can subd it
3. Attached I try to recreate the shape with Moi3d subd tools.

If I 3d print it which is going to be my first choice it does not have to be abnormally smooth.
however I would like to machine a version of it which the result needed would be the smooth surface of the attached pic.

In the end what ever I use it needs to come back in Moi for the mounting points.

Tnx!