Uh, yes. That is the gist of it. That's the gist of not liking anything ever, really.
Anyway, I couldn't care less about concept. I care about the character. Mario is by far the most boring character in the game, but he's cool because, well, he's Mario. Ridley could be purple Charizard with more tail attacks and I'd still main him, day one, because he's Ridley.
Somewhere, in all this speculation, people seem to forget that not everyone cares about Smash on the deepest level. I love Metroid. Therefore, I want Metroid properly represented. THEREFORE, I want Ridley in because he's a cool-*** character and the main villain of Metroid. I don't care how unique he is or isn't. He's Ridley. That's all I care about.