The Caverns of Imagination would act as the dungeuns, strongholds,etc, of LNA. I think that one important part of all MMORPGs would have to be dungeons. Plus, because it has to do with imagination, it doesn't have to affect the main story of LNA. Ideas for dungeons would be like alternate universe events, working on the side of evil, etc. Unfrotunately, I don't have any concept pictures to show, I hope you consider this idea and let your imagination run wild on this. The possibilities for this are almost limitless.