To BladeOFLucas: Thank you for your ideas. I have some points. The move fits Ganondorf's OoT personality since it represents his caution-less daring. Yes, his levitation made his tactics more safe, but it matters not if everything he shot could be hit back at him. He was invincible to all of Link's tactics, since he deflected everything with his cape. Only his own orbs could damage him, and he invited that risk. Despite his invincibility, he used the one attack that could hurt him.
And about his Up tilt. I forgot that the suction effect is almost certainly inspired by the "waves of darkness" Ganondorf used in OoT to disrupt Navi right before the battle.
I can compare Ganondorf's special giant orb to the Up tilt in multiple ways, which implies to me the big orb directly inspired the tilt too. Both moves take dangerously long to initiate. In OoT, the start-up let Link shoot a light arrow for a free hit; in SSB, the Up tilt start-up lets Ganondorf get hit with anything. Notably, this means Ganondorf would've had a Falcon Punch-like move whether he was a clone or not. Both moves involve an explosion too. Ultimately, I think Mr. Sakurai combined the big orb attack and the dark vortex attack. He combined them, simplified them, removed any range, took Cpt. Falcon's Up tilt animation, and made it into Ganondorf's Up tilt.
To Z1GMA: WOAH. I only knew the Up tilt could mess up a Marth's recovery and let Ganondorf fly on a crate! There was so much more to the move which I never imagined! Thank you so much for sharing that video! Seeing this absolutely convinces me this suction effect must stay on Ganondorf's moveset. The tilt does not have to do damage, just cause the suction, but the lag will maintain cautionary use. No one can argue that this suction does not fit Ganondorf either, since it so closely resembles a move of Ganondorf's from OoT (which I explained up there to BladeOFLucas).
Oh my goodness. I want to play SSBB right now just to use this move all over the place. No other tilt move is as varied and fun to me. If this is not in SSB4, I will be mad and sad.