OK--I stumbled over here from doctoreleven, and I think your analysis is amazing :D
Hello, welcome, and thank you! :)

doesn't someone say that Gandalf is bad luck, because he appears only when trouble is on the horizon? But in truth, Gandalf comes back at such times because he knows he'll be needed.
Ooooh that is a VERY good point. (The Doctor/Gandalf parallels are getting ridiculous! *loves it*)