I like the fact that once you unlock the powerups, there are shorter routes you can take if you fall - very nice! And the leaderboard for fastest climbs is a fun addition, too.
Thanks for playing! Originally it was just going to be a death pit at the bottom and you would respawn at your last checkpoint, but I then I had the idea that you wouldn't need checkpoints if the powerups just easily helped you reach back where you fell off.