You could do a color based map! Like each color would have a section and its own gimmick, red could be tall spires above lava you'd have to jump across and yellow could be tight corridors that need precise jumps to squeeze through. the environments could be composed of more than just colored blocks but stuff with a decent amount of of the color in them like roses and poppies for red, for blue there can be storm clouds (made out of ice so its still blue) with water pouring from them which could be apart of that color's gimmick, and even mobs like cows could be spawned in from dispensers for maybe a monochrome area in-between the white and black parts of the map!

See if you can make a map that’s equally 3D art, and equally parkour map. That’s my suggestion.