Imrahil said:
Unless you plan for these to be landscape covers instead of portrait ones, and these are all only the "front."
Now you've got it. ;) (I didn't understand)
I inspired myself from the famous (to me) british quad posters. Not only I think they are most entertaining, they also fit well with a "theatrical" feeling.
D_J has shown what the one I prepared for the IE gives, in the current preservation thread (though this one is not inspired from an existing quad poster):
