Attention, fine people of #over-þere!

For secret reasons, I would like to solicit opinions about the following question: if you could pick an AU version of a fantasy world to travel to (in real, actual life), which AU would you pick and why? I'm interested in the answer to this question for all fictional worlds.

Also: usually the fun theoretical questions in this channel have an implicit (Grician) warrant that the answers probably won't have important real-world consequences. In this case, I am explicitly refusing to warrant that. Make of that what you will.

[To actually participate in this discussion, please visit the thread in my authorchannel, of which this Glowfic thread is a lagging mirror.]