quite a feisty thread this one...
I my humble non-tourney-winning-noodle-eating opinion Samus is a very capable but tricky to use characther.
Samus players must be able to space, and intergrate their projectile game in with their approaches. I think learning to use her projectiles to space and limit the opponents options is just as important as the damage they do. Learning to set ppl up for the bair and dair is essential to getting KOs, also dtilt can kill at reasonable percentages. Samus is capable but requires a well rounded game. Some prefer the naked aggression and speed of the MKs and Space animals etc, and may not have the patience for what Samus requires. So I don't expect her to rate too highly on tier lists, but I think she can punch above her weight if used correctly.
Gum - not trying to provoke, just trying to be light hearted... I agree with almost everything you say regarding Samus - except the high tier bit... I think her learning curve and lack of vertical KO move prevents any high tier hopes. But only time will tell. I think the leading Samus mains of the future will incorporate a little Zero suit action, the surprise, speed and projectiles provided could help her out. (Only they'll have to retire early from RSI from that taunt transform...)
anyway, hot chick in a funky space suit made by ancient space chickens? if that doesn't appeal to you then there's no pleasing you... (except taking the suit off perhaps.)