I don't know how realistic it would be, but it would be amazing if you developed a random/procedurally generated mode, for maximum replayabilty, maybe have each bomb have a seed, so you can share ones you find particularly interesting, just an idea, I know it's a lot easier to spitball ideas than to actuall impliment them.
Like Leafshade said, I LOVE the game. Its just so short. I finished the complete tutorial and last level in about 2-3 hours. If there was a randomly generated mode or like campaign levels that get harder as you go through the ranks, I would play this so much more.