I like the idea and the visuals. Timing the rotation with the weirdly bouncy movement is a bit annoying, and quite hard and breaks the flow a bit. Maybe you could have stopped rotation when the player presses an arrow key and lock it in that rotation?
I think if the movement was faster or the rotation slower it might make for a really fun mechanic, it does definitely add challenge. The way it is the piece rotates a lot between pressing the key and reaching the target and the bouncy movement makes it harder to predict, so rather than making me act faster to pick a target before the rotation changes, it makes me slow down to time the movement, if that makes sense. It's not a bad mechanic overall, it just doesn't quite fit in with the rest yet.