Nice try, didn't work though
This game really does it job on killing time, but it is too short and doesn't bring the urge to be played again.
Starting without a launcher wasn't much of a big twist on the traditional mechanics of the genre, but was a clever idea, somehow spiced up the 'difficulty curve' and made it feel like the cannon was really something big and not some random gimmick the game gives you for free.
Other than that, the gameplay wasn't much enjoyable. You had little control over the bunnies direction and couldn't predict the location of the upgrades/cash upwards. You also couldn't intentionally let the bunny fall a bit to pick an upgrade because the turn ends right when it reaches the bottom of the screen. So there was little to do else than shooting the bunny randomly whenever it started falling.
So, as I stated above, it's a nice game, but you can have it finished in 20 minutes or less and would never feel like playing it again because there's nothing to learn about the mechanics, it's just shooting randomly and having luck.