This should probably be posted in the Q&A Thread, but I'll reply here still.
His Neutral Air isn't a great option, but from my experience, depending on the match-up it's not an unheard of option either. From what I know, it's his best Aerial. Fast-falling into either Neutral Air or Counter directly to the enemy has actually proved useful to me multiple times, often catching them off-guard and baiting them to either attack your counter or simply stand there unprepared for a neutral air. Granted, the "standing unprepared" option is dependent on the player and their skill-level most of the time, but the fast fall to counter has really helped me a lot. Reading your opponent plays a factor in this though. Also, fast-falling air dodge is a good alternative to fast falling counter ><. Other than these options...if you're directly above, I believe these are about all the move options you have, unless you want to take the chance of using Side-B to get distance to the side of the opponent right before reaching the ground.
This is just what I've noticed from my game play however, and it fits my play style. Hope it may give you some ideas ><.
Another idea is to use Neutral-B to give yourself super armor while falling to the ground. I 100% haven't had the chance to test this yet, and idk if it would work this way. Just an interesting theory that came to me xD I'll try to test this out as soon as I get the chance.