i’m playing minecraft a lot and am especially good at redstone. but i’m getting a bit bored of it. cause it gets to easy to use because of the straight forward on/off mechanics. so my suggestion is to add blocks that can interact with other blocks so you can make contraptions but without using easy to understand on/off mechanics. i have some examples about blocks that you could use. you can use them or use them as a guideline to create your own blocks.
steam: water can boil and create steam
pipes: steam can travel trough pipes to transport it to other places. it can travel down if the start point is lower than the end point(just like in real life)
piston: will extend if there is steam inside, and retract if the steam is gone. putting to much steam inside the piston will break/explode it
switch: will open or close a pipe allowing steam trough it
sponge: will extend if it comes in contact with water. how it does it’s up to you