So with 1.19 just around the corner for bedrock, one thing I would love to see would be an actual extension to the "they are all connected" lever mystery which involves a door in the backrooms. Something that would require all the levers to be pulled to open said door (and say, reward the person with a tag or something) would be easy to add, just a redstone system. The hunt for the levers, especially the main lobby ones, was actually quite fun, and so a small reward (and maybe another lever added to the main lobby too) would be just a nice "side-quest" thing to do.