Oooh, this is my kind of thread. Because the only thing I've been doing since the release of the game is complain anyway. Well, let's blow this joint! *energetic pose*
Ordered very roughly by magnitude of hate:
Diddy!
I was neutral towards him. Then he turned out to be more powerful than not only DK, but also more powerful than most characters. It's a frikkin random chimp in a red shirt and a red cap, guys. It has zero personality and a design that a grade-schooler could have done a better job at. At least DK has a bit of personality, a long and significant video gaming history and a frikkin tie. Diddy has no right to overshadow him whatsoever.
Pit!
I once tried to establish a list of what sort of tier ranking characters deserve to have. Pit was at the top, because he's classic, he's an angel, and there's just nothing objectionable about him. In fact, he's kind of lovable. But that kid is ridiculous. His B move might as well be "press to inflict damage on opponent". His weaknesses are that he has no KO moves, except that he has better KO moves than MOST **** characters, and that he's light, which he ISN'T. Goddammit Sakurai, we know you have a thing for pretty boys, but TRY to be a little professional about them, will ya!
And his abominable English voice doesn't help things.
Marth!
Exactly the same as Pit. Fox was nerfed, which was necessary. Samus and Ganondorf were nerfed, which was perfectly unnecessary. Captain Falcon and Sheik were nerfed to the point that I, as weird as it is for me to say this, almost feel sorry for them. And Marth... "what, he was overpowered? NO WAI!"
Falco!
Should have been cut in the first place. Wolf actually adds some personality. Falco, as I like to put it, is just Fox except more of a c0ck. In more than one way, if you catch my drift. And I haven't seen him in action too often, but I hear that he's overpowered again. It's always the least deserving ones, it seems.
Olimar!
Similar to Diddy. He's a pretty uninteresting character who I could take or leave. Now he's obscenely powerful for some reason. I can see why you'd make him really powerful when he's almost incapable of fighting without his Pikmin, but come the HELL on, it takes him ONE ****ING SECOND TO PULL OUT AN ARMY OF THEM!
Game&Watch and ROB...
Don't really hate them, but really now. There's no reason to make them so obscenely strong. Neither of those characters have any fanbases, apart from the few people who liked G&W in Melee. If THOSE characters were bad fighters instead of characters like Mario and Link, at least it wouldn't offend as many people.
That said, I like ROB. He's not deserving to be in, but he has more personality than some other established characters.
Lucas...
I liked him, actually, but why is it that he's better than Ness in just about every respect? I mean, his fsmash is a frikkin stick, yet it's not only faster than the Homerun Bat, but also stronger? Bah.
Special mentions go to Snake and Toon Link, both of whom I still like, but whose extreme power I have to try to ignore somehow. Which is hard. Toon Link is better than Link in every respect, if you ignore the few extra pixels of sword that Link has and the fact that it takes, like, 5% more to KO Link off the top. Comparing Snake to Ganondorf, though, Snake is better in REALLY every respect. Which is just... sad, really.
Yes, all I care about is balance. It's the thing I wanted the most in the game, so you'll have to excuse my bitterness.