As crazy of an idea as I think this is I still have a few comments.

 If I understand what you want to do correctly I would look at a radial flux alternator as this both solves some of the blade flex problems and acts as a ducted turbine.

 How many magnets and at what diameter are you thinking? or in other words just how long is the flux path to the adjacent pole? Flux goes though iron roughly 1000 times easier than air so your air gap (thats the gap from the magnet face to the backing iron on the other side of the coil) will still dominate the circut reluctance. Figuring that you will have a flux density though the coil of .6 -.7 tesla and steel saturates arount 1.8 tesla if the cross section  of the flux path to each adjacent pole is 20% of the cross section of the magnets you will be well below saturation.

 Of course if the backing iron is to be stationary it will need to be laminated.

 Writing this makes me realize how unclear my understanding of what you are trying to do is. Anyway I'm sure we will all love reading about how it comes off.