1.Yes, 4th axis is coming
2. Yes it has pencil tracing
3.I haven't looked to see if Rhino can import obj, but Madcam will
machine anything Rhino will open (I think)
4.The toolpaths can be recalled but I have yet to be able to edit the
paths themselves which are created as a "group" within Rhino.
5.Joakim is a great person for support of any kind. If he doesn't
already have a post for your machine he will help you create one.
You can also edit and creat your own post once you learn how.