Ah, yes.. the first character discussion thread is about Meta and his broken nature. Congrats for claiming the first new thread after the "Wiichat Apocolypse", Turk.
Ahem.. I honestly don't have anything in particular to argue your post, in fact, I mostly agree with it. There's only one thing I can disagree with - the lack of a projectile not hurting him. Yes, his Mach Tornado and especially Drill Rush disassemble an amazing slew of projectiles, but Mach Tornado doesn't cover enough, and Drill Rush activates just slightly too late to make for a quick counter on most projectiles, unless your enemy is an entire stage away.
Still, this doesn't really hurt him much. A projectile would be just another of a thousand blessings for Meta, considering his speed and range, but his specials 99% make up for fighting other projectile users. I'm basically saying a projectile would be nice, but with or without it he's still a monster. :P
Aaaanyways, that aside, I'll agree with Meta's monstrous capabilities. In the hands of a pro you'll need another high tier character to stand a true chance against someone just as good as you are, i.e. the tournament scene. Whether or not a character in Brawl can truly be deemed broken, Meta will be the one to be known as such if true.
Oh, one last thing. Meta is certainly the best character in the game, but he is beatable. While most of the time if two players are equal in skill and one uses Meta, the Meta player might have an advantage, due to his impressive string of good match ups, but on a pro's level of gameplay the character doesn't make as much of a difference as the player themselves. I don't see the best Captain Falcon player beating M2K, however. Match ups make a difference, but skill levels make the game. Every match lost to a Meta can't be justified by Meta simply being broken, unless you had a terrible match up against Meta with your main, sub, etc., you lost out of skill. My point is, this may be the only arguable reason whether or not Meta can be deemed as "broken".