There definitely has to be some way of controlling a guild if a GM goes missing. I just don't understand why a new Guildmaster cannot be promoted if the current one cancels the membership, goes AWOL, etc. And I definitely think that Disney needs to incorporate more piratey aspects into the game. The Walk the Plank features for stowaways would have been a great addition, even the new system of who can board other's ships is flawed. But a Mutiny would be fantastic! Well, not fantastic, but you know what I mean.
The very first guild that I was in was going nice and strong until the GM lost interest and we never heard from him again. We waited almost a month until finally deciding to cut our losses and move on. Not that I'm complaining, since I have my own guild now, but still. Also, another way to avoid this problem is to maybe have there be Co-GMs. Either both can be designated when the guild is founded or someone can be promoted. There really needs to be a better hierarchy within the guilds beyond GMs, Officers, and Members. I would like to see perhaps a 'First Mate' option, a second in command sort of thing. Now, it's just *bam!* you're an Officer, off you go. I think it would serve more of a purpose in a guild if there were other promotions to be made. Just something to protect guilds and the people who invest their time in to them. Anything.
Read this Disney!