Some suggestion on chaos cube.

1. Keep that honey sulfur cube shenanigans(the monorail) and bring it to Java. It would be such a nice addition, and since it can't go up and down, it won't break other transportation methods. If it needed nerf, nerf the speed.

2. Keep the wind charge mace cause the sulfur cube to float like a balloon, and bring it to Java as well. Either that or make an interaction with a certain block/condition for it to float forever. Perhaps skulk block would make it have a low/anti-gravity property. The ability to make sulfur balloons is one of the nice things that the community has found out.

3.Tnt+sulfur cube. The explosion will spread sulfur in the blast area. This would allow a renewable source of sulfur.

4. An alternative way to gain gunpowder. Using sulfur to craft gunpowder would be helpful for peaceful mode players and players who didn't like building creeper farms.

5. A better-looking sulfur spring and a rare ground-level sulfur cave. Currently, the sulfur spring look out of place. The pile of sulfur should be more spread around it and even better if the place look more like a hot spring than geyser. Coarse dirt can be used to blend with the area around it if it spawned in any grass biome. There could also be a rare ground-level sulfur cave in badlands and desert, too.

6. Bouncy potion. Just for fun.

7.White sulfur smoke. It more versatile than yellow one. Either that or an ability to dyed the smoke(that also work in survival).