Fun thought, a different class in each world.

I don't see how you could have fun with that many servers (losing out on link skills and cards) but it's your choice, really.

I, too, have had thoughts of starting new characters in other worlds but not nearly as many as you. Just one or two. I picked my secondary server based on their FM prices. Saves me the trouble of memorizing a whole new set of prices. Just my two cents.