Let me start by saying that I'm what you may call a "casual***" but I know a little about Smash tourneys so here I go.
First and foremost, I don't buy into the tier stuff a lot. I can't see why Meta-Knight is so broken and why Falcon is so suck. Meta-Knight seems more balanced to me then many other people say. He's probably top tier either way for the same reason Fox and Sheik were top characters: he's a 1-on-1 character in a multiplayer fighting game. He is light and has very few killers. Even his best ones force you to go chase your foe, and as for priority, nothing goes though a shield. You'd think his counters would be the big characters who out live him and kill him to easily: DK, Snake, Bowser, and Ganondorf. Not to mention DK could easily finish him with a back throw. Of course, this is just me.
Now, one thing to remedy this is
get rid of the damage at the end of the time limit rule. This is what really makes Meta-knight too strong. Let sudden death determine the winner. I've seen this too much. meta-Knight gets killed and it's 1-on-1. The opponent knows what he's doing and could defiantly pull out a win. What does Meta-Knight do? Sits at the edge and camps until time runs out. And guess what, he wins. There is much you can do you you don't have multiple jumps, and even Dedede can get screwed becuase of his falling speed. If Meta-Knight was forced to fight, then the fight would ba lot fairer.
The other solution is to make a 4vs league. The reason the game is so "imbalanced" is becuase the game is designed with 4vs in mind. Meta-Knight is balanced in 4vs with items and on many stages. While he can dominate, his light size and weak attacks make him easily dominated. This is how the game is balanced. I don't think many of you would like it, but it may help to create a more balanced metagame.
Would it be logical if MK isn't banned but instead is limited to either being allowed for use in only one match of a set or perhaps is only allowed as a counter-pick choice so that while he is allowed nobody is able to just use him.
This isn't a bad idea.