Why do I need several approaches to the same moveset? If a character shoots an arrow with B, throws a boomerang with Side+B, spins with a sword with Up+B, and pulls out a bomb with Down+B... that's fine but I don't need another character who shoots a flaming arrow with B, throws a faster boomerang with Side+B, spins with a sword faster but not as powerful with Up+B, and pulls out a weaker bomb with Down+B. That is not variety. That's having modified copies of existing characters for the sake of having more character choices. That's what bothers me the most with the Star Fox clones.
And exactly why is this a problem within any fighting game? They all do it. And guess what? They still sell like hotcakes. Clones still sell as characters.
Welcome to the world of fighting games, Arc. That's how it started, and that's how it always will be.
Also, they can have variations of the same moves. But this is something you fail to mention; They don't play the same regardless. Not a single clone in Smash is played the same way due to them being different enough to require different metagames. They aren't the same character. Also, Jigglypuff was mostly a clone of Kirby except for a small amount of A moves and their B moves. Also, guess Luigi should've never gotten in either.
You know what the trick is? You bring them in as a clone and LUIGIFIY them instead. You get fan favorites in(who don't play the same regardless, so it doesn't matter that they're clones) and make people happy.
Look, I don't like the idea of Toon Sheik THAT much, but to be honest, I don't really care who's in as long as they are playable and fun. As long as the character doesn't play the EXACT same, it has zero bearing. A true clone will play EXACTLY the same, otherwise it's just the spirit of a clone, being the "same character".
The only character to play near identical to the original was Pichu. Not even the Polygons and Wire Frames got that much. Hell, Crazy Hand is a clone of Master Hand(with a few extra differences).