10) Because of the command structure, you didn't have selection competition. Ever try to move a symbol and get the view instead? Never happened in CADDS IV. Translate Entity was separate from Move View.
11) Well written documentation
12) Polyline (pwin) selection - not just a rectangular box. It's in Photoshop. Is it in Creo?
The only item that would be tricky nowadays is the tablet. Given that there are motion tracking wall sized white-boards, getting a B-size one set up is not unthinkable, but the mouse has driven the interface in ways that are incompatible. Maybe something like the Leap Motion could be used to create a similar interface.