Would be great, though also one of the hardest things to implement because that would require a tool that never existed in US history and would LOADS of time and work from the creators to set up to help pop objects (like balloons) in the balloon fashion.
Eggs are another thing to add, but again the tool to crack them into shards with chipped pieces of their shells would also take years of time to implement.
Now American footballs, volleyballs, netballs, korfballs, beach balls, zorb balls, cricket balls, croquet balls, bocce balls, polo balls, water polo balls, kickballs, dodgeballs, softballs, lawn bowls, cannonballs, shot put balls, squash balls, ping pong balls, clear crystal balls, mirror balls, the world's largest soccer ball, the world's largest beach ball, rockets, and solar sails would take MUCH less time to implement than a balloon-pop or egg-crack feature.
Yet another feature that hasn't been completed is one that helps pumpkins break when smash, as that would take so long to implement that it hasn't been used yet.
Time till guide us to when they're implemented.