I know that world types aren't confirmed at this point afaik and every one of these ideas can't be done but
-What if every world was literally stacked upon each other? A towering series of ridges,cliffs and caves.
-Maybe the main map could be split in half to make two vertical submaps, but the left is the lower part (where worst world might be) and the right could be the upper part (where best world might be). There can even be one main path going up or down connecting each world. The entrance to the other submaps would be doors in the cave or pipes...
-Or maybe even fall down a hole to enter the cave map.
-Maybe even ride a cloud to get to the sky or space map?
-LOL get eaten by a muncher to go to worst world
-Maybe in one submaps make on one path to another while walking?
-Enter a ghost pipe to go to
-Dive into a pool of water to enter water submaps.
I'm all for a few other people's ideas as well
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