Actually, I don't see why we cannot ban his B-moves in the control setup. He has 5 jumps and a glide so recovery should not be a problem (Pit is a testament to this). His down-B and his neutral B are beyond broken. He would probably be high tier without the use of his B moves.
They're not broken
enough to be banned. And we do not ban specific moves. That would be ********. His Down B is bad.
Very bad.
"Oh, I accidentally hit B."
"Forfeit!"
This idea should not be scoffed at because we are in a sense balancing a character using just the means afforded to us by Sakurai himself found within the game (and you can set a controler configuration without specials, I checked).
It's not our job to rebalance the characters. If they're "too good", we ban them. If they aren't, we don't.
Besides, if the Street Fighter Super Turbo community had a toggable setting in the game which could have locked Akuma's most broken moves and balance his damage output while keeping the others the same, would he have been banned?
No, because we don't dole out random handicaps (because that's what this is). We either ban characters or we don't. People who don't know how Competitive gaming works must stop saying "If X happened, wouldn't Y happen?" as if they were speaking the truth.
The tornado is an effective and almost unpunishable approach.
So are Kirby's aerials. Ban?
The move does freakish damage and it can easily shield stab if your shield is small. Plus, shield does not matter if you are in the air.
Freakish damage? In what alternate universe? Also,
of course moves will easily shieldstab you if your shield sucks! And if you're in the air, there are
many characters with moves that last so long you cannot airdodge them.
Ban them all?
But Shuttle Loop is a VERY big problem.
But Shuttle Loop is not Down B.
A skilled Meta Knight can abuse it and cancel it into another attack thanks to glide attack cancel.
Or one could shield the initial hit and then immediately hit back
before he can do that. Or one can just space it so that he won't hit with his glidecanceled attack.
It is a VERY effective edgeguarding tool; honestly, I see most characters get killed by this more than other moves. It has high knockback, very quick for a high knockback move, makes him impossible to edgeguard, gives him another glide, has retarted range, and is virtually unpunishable. Plus he can recover without it easily enough.
Oh noes, it's a good move! Ban it nao!
Honestly, banning Meta Knight would be dumb, but locking his special moves would make a lot of matchups against him more managable and maybe even even. It is simply balancing him with the other high tiers without hacking the game.
Locking this and that would make a lot of characters more managable. Doesn't mean we'll do it.
The moves themselves might not be terribly broken, but those moves in Meta Knight's hands equals trouble. Frankly, it is a small way to balance him especially considering he is not terribly nerfed by the absense of those moves.
Either we ban him or not. We don't ban specific moves. That's not how it works.