Slime bubbles?

Okay, I think in 1.3 they should something called slime bubbles. Slime bubbles would be made out of 9 slime balls, and act as a fall reducer, such as water. But you can use also like a trap, like cobwebs using it's stick. Imagine using something like a trampoline in servers or creative or something, because the only uses for slime balls are either crafting magma cream or making sticky pistons. Any one agrees if yes or no, still say why you think it should be added, or why it shouldn't be added.