P.S.: near the end of article author lists what autorouter should do and what info (and freedom) we should give to the tool. I think, the first show-stopper fo

P.S.: near the end of article author lists what autorouter should do and what info (and freedom) we should give to the tool. I think, the first show-stopper for 100% autorouted designs are power nets (of course, not only power, there are a lot of other corner cases, like thermals, but power is what you encounter right out of the door). Router should know which nets handle (somewhat)high currents. And which direction the current flows. You do not want your power amp supply rail routed sequentially. And on the other side, not all power nets should be routed as stars (sometimes there is only small power draw, and sometimes it is only voltage sensing).