Just a thought... this one would lead to a lot of puzzle potential, but I'm not sure how it would be received.
Resilient trapdoors. Current ones are red. I propose the formation of yellow and green trapdoors. Step off a green trapdoor, and it becomes yellow. Step off a yellow trapdoor, it becomes red. Step off a red trapdoor, and it falls.
This would allow some quite compact puzzles to be made. What do people think of the idea?
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