Good news! I was able to play through the entire campaign from start to finish, so woo hoo! There were, of course, many minor bugs, but these fell into the category of journals not updating properly and so forth. Nothing major.
So I have now turned the campaign over to two alpha-testers to see what they have to say about it. I think the campaign is a good one, but am I full of dung? Have I made a flop? Are my characters horrible? Am I right about it being good? Something in between? They'll let me know, and then I may pass along some of their comments.
As it turns out, the alpha-testing comes at the perfect time. I leave tomorrow for yet another business trip to Alaska for two weeks. I am going to take a break from TMGS, but at least some work on it will still be getting done in my absence.