Hi vodkamartini,

re: Black edges - yes there was some previous discussion of that earlier here:
http://moi3d.com/forum/index.php?webtag=MOI&msg=2801.28

But note that you can get black edges right now if you want, just select all edges (quick way is to go to the scene browser / Types and click on the text part for the "Edges" entry), and assign them to a style that has color=black.

In MoI edges can be assigned their own styles and names, and be hidden and/or locked same as a regular object.

You're probably not used to that since Rhino does not have the ability to do that.

The same thing applies to faces as well, for example you can assign different styles to face sub-selections without needing to break it apart into individual surfaces.

- Michael