My 5 picks for the characters that should never have been? Hmm...
1) Ike... I like Ike, Ike I like. It's just that... We had Marth and Roy, which were pretty sweet if you ask me. I understand the whole "hyping up the latest games" thing, but there are better ways than including a slow character in a fast-paced franchise like the Smash series.
2) Pichu... He's fun to play with, and uhh... That's about it. He wasn't a good character, damages himself, very light, and the game already had 3 pokemon (Pika, Jiggs and Mew2)... It would've been a better idea to include another character of the less-represented game universes (like F-Zero).
3) Wario... He ended up being a badass character, fast and powerful. But... Why was he put into Brawl, instead of another character from a different series? We already have Mario, Luigi, Peach, Bowser and Yoshi... Wario's moveset could've belonged to a different character from a different universe, if you ask me (And ever since he appeared on the trailer and farted, I've had this deep hatred of him... Ruined the whole mood, if you ask me)... Itd've been a better idea to either add someone else from a different franchise, or Smithy/Geno/Mallow/Booster/an Axem Ranger from SMRPG.. THAT would've brought some huuuuge hype!
4) PT... The transformations were awesome and all, and they were quite hyped around where I live when they were announced, but why not just include a different pokemon rather than a trainer? Ditto would've been the most AMAZING character ever, with his own personal moveset AND the ability to transform into your opponent and take his moveset (minus the standard B, which would've been for transforming back... Sort of like the opposite of kirby, which only takes the standard B). Sure, it would've been hell to make and code, but imagine if it were real... More unique than PT, if you ask me!
5) Diddy... I was seriously expecting something else when I saw his picture in the Brawl roster in the Dojo. Like K. Rool, since he's the villain... Or Funky Kong, since he's the bodybuilder, fits more into a fighting game. Diddy ended up being an awesome character, but I still find myself wondering: why did they choose Diddy? He hasn't had much representation in DK's world lately, he's been more into racing games.