Neat, but nanotubes have been around for a long time now. The problem has always been scaling up, which this article mentions is still an issue, sigh.
Although, the 86% connectivity of copper seems relatively low, I think with higher quality nanotubes, it would be higher than copper, right? I'm stretching my memory a bit. I feel like I haven't read about manotubes for a number of years. The high strength they mentioned later in the article, sounds the same as I've heard before. A well-formed nanotube braided properly should be basically the strongest rope we've ever made.