User blog comment:TheXLR8D/Flying contraptions!/@comment-4301259-20110830192124

I like the idea of being able to fly or hover over ground, but not without limits. Because we gotta think about game balance, a thing the developers are working hard to keep. It's not without reason they nerfed the rocket boots - I agree with them on this decision, because you could fly indefinitely as long as you had mana potions, and the rocket boots aren't really that hard to get. If you could craft them from endgame equipment or with hellstone it would've been more balanced. Now, back to the flying machines/mounts, there would have to be limits to how high you could go, so you couldn't get as high as the floating islands.