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I don't really have to much experience with layout work, so I decided to just go for something a bit whacky. If I did a redesign without the space constraints, I think I would try and make a few double-sided layouts so I could have more maps/encounters, which could be flipped over to save space. Have the GM information be all in one section, maybe even try build a little cut-and-stick folder or something into it to store all the map and token cut-outs.