I like it, though I do agree with others about the plot. It's not bad, but I think more of it would do better. Perhaps it was just the way the post was written, but it felt like the beginning and end lasted forever, while the middle flew by too fast to notice.
Perhaps something in the beginning that required the players to dig up the information, instead of getting it from the Seer (being so close to death might blind him more than his disease). Others have pointed out some good ideas.
However, I did like it immensely. My attention was kept by the whole thing and it made sense. It would benefit from being fleshed out, maybe given more complexity, but it's good and useful how it is.