Also re: spheres - MoI will only show you the "auto-rebuilt" control points for a sphere that is a full surface that does not have any trimmed out areas in it.

If you trim away a little piece of the sphere and then turn on control points, you'll then actually see the sphere's natural control points which look like this:



These points don't deform well though - it's basically 8 chunks kind of glued together and if you disturb these points you can easily make a sharp crease appear between the sections - that's why MoI will show you the control points for a rebuilt sphere instead when it is able to.

- Michael