Rob Pike created Plan9, which in tried to take UNIX to its logical conclusion. Plan9 tries to really make everything a file, including sockets. It uses the filesystem to control access to resources. And so on. The reason why UNIX "smell[ed] really bad" to Rob Pike is because Plan9 never caught on, because people didn't want to break compatibility. It really is a shame because Plan9 was the superior OS.
That being said, I am in favor of the proposal here-- at least in the context of server systems.