As for space elevators, no not really, long tethers are all about tensile strength relative to length, now the ability to use such a configuration with something like carbon nanotubes or graphene might come in handy but elevators are all about how well a material does when you hang a big weight suspended from it, at that scale, basically can a yarn-width piece of the material suspend an aircraft carrier from it? And we'd have to see how the material stacks up in terms of tensile strength. I haven't seen a listing for that yet, just how it handles compression which is quite amazing. I will cheerfully stand corrected if the stuff turns out to have a TS of tens or hundreds of GPa of course.