Ridley Moveset
Moveset Number 2
Moveset 3
Here's a few movesets for you to read. I don't think they'll convince you, cause you're clearly insanely biased, but read em anyway, since you asked.
Erm, okay... Plasma Breath doesn't necessarily have to be anything like Bowser. Could be individual fire balls that act in varying ways, or a gathered beam or whatever. And yes, they are similar to Mario and Samus. But guess what? Practically every type of projectile actuion possible has already made it into Melee and will probably be in Brawl.
Flying? Big whoopdy doo. Look at those characters. Just look. Now, out of those four, how many are big, mean *******s with insane power and weight? None. So no deal.
Claws? Claws are standard attacks. You might as well get mad at Luigi or Ganondorf of Captain Falcon for punching, cause that's what Mario does. They can be implemented well.
Tail. Again, so Yoshi uses his tail. Is it huge and prehensile and able to perform a massive array of techniques if utilized well? No. Not at all.