Actually, Zero Suit Samus sounds a LOT like Sheik. Much faster, long reach with a whip, spin kicks? That's almost exactly how Sheik played.

It makes sense if they are using the Twilight Princess Zelda too. There is no more Sheik attached to her, so she becomes a big magic damage, slower moving character. Maybe they've really increased Zelda's damage to make up for it. But now we've got ZSS, making up for how Sheik used to play.