Potion uses for the Sulfur Cube

You should be able to use lingering potions on sulfur cubes to keep the efect forever, until you use a bottle of dragon's breath to remove it. For example, slowness potions would make them have a solid hitbox that you can stand on and not move around at all when damaged, only by pistons or explosions. Invisibility potions would make them invisible, but without the particles. This would be amazing for building stuff like pool tables. If there is no block in the sulfur cube, then it will have a translucent texture so you can still see it. Slow falling potions would make them slowly float until a certain height and move up and down around that height like a balloon. They could also be attached to a lead. Also, you should be able to mix these potions togheter and combine their effects. If it had both invisibility and slowness it would still float, you just can't punch it around.