Guys, take ravenhats seriously now, please. Okay, his points are pretty badly informed and subjective, which might make him a "noob", but he's not acting like a stupid "n00b" about it, so be civil.
Maybe Yuna should list some good arguments in the first post for easy access?
Anyway, here's two little things I'll say about your arguments, ravenhats:
1. Wavedashing is not a bad thing at all. Firstly, it made the game a lot deeper. Sure, you can work without it, but it's just so much less fun for both the players and the audience.
And, contrary to popular belief, it didn't decrease the balance in Melee. If anything, it helped it. Sure, Fox and Falco went past Sheik in godliness, but it also greatly helps Mewtwo, Ice Climbers, Luigi, and so on, and it gives EVERY character the chance to even out their own flaws a bit by giving everyone a boost in the ability to approach, defend and counter. Without wavedashing and l-canceling, Melee's balance is absolutely atrocious, but with it, everyone has some sort of options, and Mewtwo becomes capable of comboing and KOing Sheik, which would be impossible otherwise.
2. You say speedy characters are at less of an advantage now and heavies are better off. I call shenanigans.
First, you have to define speed. I can pretty certainly say that running speed is a minor factor. Speed is at its greatest importance in the moves of a character, in combination with range. It was like that in Melee, and it's like that in Brawl. That is why superfast Pichu, with all its speed, was bottom tier, and slow Ganondorf was middle tier thanks to his range.
Sure, Dedede seems slow-moving, but he's only considered good because he DOES have speed AND range in most of his MOVES. Running speed doesn't matter when your weapon covers a giant distance in the blink of an eye. And the other reason is his chain-grab. DK, likewise, is good because of his speedy and rangy tilts and bair.
Meanwhile Ganondorf and Captain Falcon are at the bottom (though people are arguing about Ganondorf, who, guess what, has range), because their moves have a lot of lag.
Who doesn't have lag at all? Metaknight. The ultimate in speed, with good range to boot. And considered one of, if not the best character in Brawl.
Heck, speed might well be even more important in Brawl. Think about it, powershielding is SO easy now. If you used an attack with just a bit of lag after it, and it gets powershielded, you're going to be attacked.
And the hitstun is SO low, you can only follow up into a combo if your moves come out fast and end fast. Slow characters don't have this luxury.