You're just not going to get a lot with these 'list five things' questions. That's fundamentally not the way I operate internally, and the answers would be meaningless next week if I actually posted them.
1) Yes, the mud is well backed up. Nevertheless, it will almost certainly be permanently destroyed at some point. I find it unlikely that I'll be actively maintaining it a thousand years from now.
2) No, it wouldn't be easy to pick up where I left off. It would be pretty easy to keep it online though, simply give it server space and a periodic restart. The existing imms and admins could pretty easily keep it running, but it would likely take a while before new skills and the like were added.
3) I don't really think AA has anything that unique. The thing that makes AA work is the combination of things it has. About the only real weird thing we have is the ability to enter containers.
4) I honestly don't know. Mostly I find spots that I'm unhappy with, or that players are unhappy with, and try to change them to improve the overall flow of the game. A lot of the things that I would consider problems are only problems if you try to do something new that depends on behaviour being changed.
5) At this point, yes. This is perhaps sad and unfortunate, because it could be so much more. It tells me I need to work harder.
6) Some aspects of the game are a work of art; most of it is not. If I died tomorrow, it probably would be a testament to my greatness, which quite frankly means I need to work harder. A lot harder.
7) Definitely the builders, especially the early ones (Wyvren in particular, the original Alaska gods, the original Texas gods.) After that, the players, who helped guide the builders and me through making a game that was fun to play.

The game right now is not a success, by my personal definition. I'd have to bring it up to a minimum of 200 players to begin considering it a success, and after that I'd probably just set higher goals. On the other hand, I do not consider the game a failure either. It's simply waiting for success.
9) This is dependent on a lot of factors. If I die, the odds decrease substantially, and are probably on the order of 25-50% that the game will be backed up somewhere, 1% that it will still be running. If I don't die, odds are probably 90% that it will be backed up somewhere, 10% that it will still be running in a recognizable form.