Gametrailers states that Sakurai, the director of Smash Bros., may not give his newest game a roster as big as the previous titles have. I, for one, believe that it will be a grave mistake to limit the roster. Characters are probably the biggest issue of consumer complaints. I think even if the newest installment SUCKS- if the character roster is great like 45-50 CHARACTERS. It'll do fine regardless.
Sakurai is trying to go for a game that is technically sound and is deciding if sacrificing character roster is worth it. I think they should include as many characters as they can, make it visually compelling with good sound, and just balance it out as best as they can before releasing it. Any bugs or balance issues afterwards can and WILL be exploited by our gorgeous fighting game community. Nintendo and Namco can just continue problem solving in updates. It worked for Street Fighter since its conception, I think. Definitely worked for Street Fighter 4, except the part where they got us to pay for 3 games.
I think it's vital that development gets this particular game right; make it as good as it can possibly be. Smash Bros. is one of Nintendo's largest shots of bringing hardcore gamers to Wii U..... well.... at least bringing the fighting game community to it. What do you guys think?