Yes, I remember some 20 years ago there were projects for even larger airships (please read as carrying bigger loads) aimed at supplies to otherwise inaccessible places/construction sites/mines, called Cargolifter:
Yes, in theory. I remember when Lockheed took over the US Antarctic program support contract and claimed they would use an airship to transport stuff to S Pole. It was obviously ridiculous given the weather. If it weren't for that it might make sense.
