I can just think of someone creating a room filled with cracked orbs and you have to go through them without hitting certain ones or you wouldn't be able to leave the room.
I think that this is really too similar to the normal orbs. How about giving it another special quality? Perhaps it can toggle doors that are only visible when shut?
Maybe we could merge this into another type of orb, for example the red orb, or whichever one can change trapdoor states. Maybe they can only be used once, which sort of goes with the way that trapdoors can only be used once. By the way, can the player tell if an orb is cracked before hitting it?
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Slashing, whirling, diving, twirling,
Snapping, turning, rising, swirling,
Screeching, flipping, gliding, sliding,
The red hawk's dance of death.
.....the king of the skies.....