Interestingly All the propositions I've seen are all tethered to a land base, I see no reason to not have it hanging with a landing pad as that would alleviate most of the issues they have been trying to work out.
Alleviates some, aggravates others. Always a trade-off. There was quite a definitive article a few years back but I have no idea where to find it again. Larry Niven has covered some of the issues in one of his essays too.