Megaman would definetly not fit in brawl.
You sir, obviously don't know Megaman.
He would be an excellent addition to SSB.
Sure, I want Geno, but that's only because I'm a stupid fan boy of his and find him to be awesome, but Megaman would be great to have.
People say that he would be a clone of Samus? The only that he would be is probably with the Buster Gun. That's about it.
No other way. (That I can think of)
Megaman can dash (think of the possible attacks), Megaman can have an array of abilities from all the games (like Cutman, or Gutsman), he can summon Rush, he can have the Z-Saber (lol MMX3) ect.
There is a whole list of things Megaman could possibly do in Super Smash Bros.
Think about the assist trophies that would accompany him.
Zero, Cutman, Gutsman, Quickman, Dr. Wily, Protoman (omfg <3), Bass, Rush, Roll, The Bonnes from MM Legends, ect.
On another note, think of the stages.
So before you say Megaman wouldn't fit into SSB, please, think again, or do some studying on Megaman.