I want to play as Tails.
And he has the best possibility. Why?
1. Shadow and Silver are newer, and would just be clones. We have enough spinning. HOWEVER I do see Shadow being a Boss.
2. Tails appeared in the second Sonic game and has appeared in more than the others.
3. Knuckles.... why can't both Tails and Knuckles be in the game? Who said there had to be a limit? He's a good choice (Sonic & Knuckles), but I'd rather see Sonic with a good ally. There's many people who remember Sonic 2 more than the others.
I call the "unfair to other franchises" hogwash argument. I guess Mario is unfair because it's the most popular and has the most PCs to someone like Kirby. That same can be applied to Sonic. He/his franchise, is, by FAR, THE MOST POPULAR out of ANY 3RD PARTY FRANCHISE TO BE PUT IN BRAWL.
Tails AT? Sadly, I see this coming..... but what would he do? I think he would act like a 1-Up. Get his trophy, and then you get a little Tails icon by your stock. If someone you
fall off the stage, he activates and pulls you back up onto the stage. It'd be the same effect as when you get off the return platform, so you'd be invincible and would prevent others from just smashing you both down the hole. Speaking which, if anyone would try that, they would get struck by Tails' .. tails, and get hurt, as that was a method of attack in Sonic 3. In fact you had to beat one of the bosses that way if you were playing as Tails Alone.
I would much rather see Tails playable than any other supporting characters, because at an unbiased look, he fits more, not because he's "not much of a fighter", but because he helps Sonic and they're always there for each other.
And then there's always Mario & Luigi vs. Sonic and...................
Yeah.