I'm so glad we can use the free-form drawing and things to make our own stages, as well as the new themes and textures! I think I might make some stages from other games that didn't make the cut. Here's my idea for Sky Sanctuary from Sonic & Knuckles (sprite credit goes to SkyLight and Spriters' Resource):
(I apologize for the big image.)
The textures aren't going to be identical, of course, and the side/upper blast lines will extend a bit past the image. The thin platforms are pass-through, and the gray arrows mean that platform moves up and down so that characters like Little Mac can get back up. The clouds will be platforms with springs inside, to recreate the gimmick in the original stage. You'll be able to walk through the little "tunnel" areas in the towers, as well. I aimed to recreate the feel of the original stage, that being this massive paradise floating above the clouds, with tons of different places to go and things to do.
(Inb4 the weight limit/stage size make this impossible.

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