Redeemed still has multiple guild leaders, though. The idea is that you have more than one person with equal level of authority that way. I have been tossing back and forth the idea of terms for the guild leader position, but haven't really worried about it much, since we won't really have to worry about that sort of thing until well after launch. If I had to pick right now, I'd probably either have no term lengths or long term lengths for guild leaders. The guild leader spot would essentially stay in the same hands until either that person decided to step down or until a vote was called for an election. That way the leader would be able to kind of determine for himself when he needed to step back instead of feeling like he had to wait for his term to end. But like I said, that's one that I haven't really tried that hard to figure out, so I'd love to hear thoughts about it.
As I said in the other post, my intention would be that officers be appointed by guild leaders - at least initially. I think it could be a good idea to have a system in place to call for addition/removal of an officer via a voting process, but my overall concept of the officers is that they act sort of like the President's cabinet - a group of people appointed to spread the work around as necessary.