Not really. I was responding to your comment that Zero Suit Samus represents an additional female character. She doesn't. She represents an additional female moveset. She's the same character as Samus, and her presence has no real effect on the gender ratio.
Often? He's big in the Prime games and Fusion, but then that's Meta Ridley, Omega Ridley and Ridley X. Your ordinary Ridley isn't really that much bigger than Samus. In the original Metroid he's only ever-so-slightly taller. In Super Metroid, the top of Samus' head reaches where Ridley's neck joins his body, so he only really has a head and a neck on her. In Zero Mission he's kinda large, I guess, but he's probably closer to Samus size in Zero Mission than Mario is to Bowser's size in SM64.
I actually don't mind she's good-looking, that's more Ein Bear. I just think that in the original Metroid, the fact she's an attractive woman is was a piece of trope-subversion. Given there were essentially no female protagonists in the era and the manual is very careful to avoid specifying her gender, it would actually have been a big surprise to reach the end of the game and find out the whole "hey, a woman can do this too!" thing. The subversion is the important part, and just straight up playing the "hey, sexy laaaady" angle seems wrong when that's not actually straight-up sexualization but instead a subtle mocking of the player's inbuilt expectations for what a video game protagonist is. So that's one reason.
The second reason is that it isn't a particularly faithful representation of the series. When the Power Suit runs out of energy, Samus dies because she and the suit are fundamentally integrated while it is active. She doesn't take it off in combat, ever, because her capabilities outside it are extremely limited (she can't even kill a Space Pirate, for example). The one time she does end up without it in a combat situation (in Zero Mission) is a terrifying experience where you have to sneak everywhere and can never confront enemies directly. To have Zero Suit Samus in Brawl not only be an extremely capable fighter but actually better than suited Samus is just totally against what Zero Suit Samus is in the games.
If they wanted to do Zero Suit Samus right, she would simply be a victory pose for Samus at the end of a match. It would be a nice homage to the fact Zero Suit Samus is revealed as the endscreen of the original Metroid, and it doesn't misrepresent the character. The attractiveness isn't an issue (provided there are no lingering ass-shots).
