Sooooo many things.
1. The addition of the width mate. This alone has saved me so much time it's unbelievable.
2. The ability to rotate views within a drawing.
3. Sheet metal bend notes.
4. Linked split pane views
I can't think of any more right now, but I would have a hard time going back...
It finally converted over and opened, but it's a pretty good size assembly. I've never opened a 3d DXF before so I was surprised that it broke it into 54 parts.
It's around 28m total size in a zip file now. If you want it, I'll try to send it to you, but I don't have any webspace to upload...
I have a link with a curved slot in it that a rod slips through. The link should be able to slide and rotate at the same time along the length of the slot but I can't seem to mate it in a way that allows this to happen.
I tried searching this forum, but really didn't know what to look for...