Hmm, well since I don't currently see any comments here, I'll go ahead and say something.
I think the Chronicler's Company becoming Toa idea was/is a good one. I can't say exactly why, but for some reason Macku seems like the best choice for leader. She's done some pretty brave stuff.
Oh, and besides the two trilogies that you mentioned, I have to add Jurassic Park, Indiana Jones, and the original Star Wars trilogies. I guess great things come in threes