Perhaps making the Hometree might be the biggest challenge of the mod, think of it that way, how will you get all the lod?, and how would you prevent it from disapearing due to it's size? still I think it's a good idea to have a portal to throw you into pandora, as for the land any random land goes, there's no oficial map of pandora so anything goes, you could infact make different lands like provinces and travel from one to another, I look forward most to the facepaints, I want facepaints. We could make it kinda like how the Dryad's made their huge home in Dungeon Siege II, with wooden and wire lifts to take you to the vendors, homes, inn, maybe add a pet shop like in a couple mods I found before, and the lifts could just be portals where when you pull the switch to get from one point to the other you appear on the other lift as if you moved the lift to that location. Although this may be going a little too far with the mod, it may actually prove to be a very good, well known mod.