I wish we could throw some redstone down then a slab on top of it so it only uses up 1 block. I mean the redstone is flat so it shouldn't be more then 0.5 of a block and a slab should also be 0.5. Would make hiding redstone so much better in my opinion. Also kinda wishing we could put slabs on the top half of a block. Maybe down the road.
Heck even putting redstone on top of a slab would be nice