I love the current cast we have. They all feel fun, and the moveset clones play quite differently enough that I don't feel like I'm using the same character at all. Or even remotely similar at that point. I do agree that regular Link feels kind of like they did a poor job in representing BOTW, though. I get that he's not going to be massively changed either way, but the minor changes worsened the character in an attempt to represent one game. A costume should've been enough. Hell, even having the Magnesis as a Throw would've been a lot better(giving him range like before). But either way, he's the only one that feels off to me(Ganondorf feels great, bar that meh Up Tilt. The rest? It feels great to pull off. Sure, the Sword feels kind of awkward to me, but it's still highly satisfying to defeat an enemy with. Power's his name, and he adheres to it well. I still wish he had a Reflector, though. It's outright missing and a tool that would help him tons while not actually changing the moveset in an alienating way).
I'd love to see Pig Ganon(specifically from ALTTP, none of that quadripedal versions. Plus, he'd be much smaller anyway, much closer to Bowser's height, as it works well as a good size in general for that kind of muscle-bound body), Impa(Oracles), and Tingle(MM). They're the last three on majorly wanted character set for the LoZ series. Not that I would've had an issue with Toon Zelda and Toon Sheik, though. Just the same moveset animations but way smaller and faster(and Toon Sheik would most likely have a far harder kill rate if she follows the same concept as a Transformation character as Sheik did) could be interesting, even moreso for Toon Zelda. No longer a slow character. Though I imagine she'd have less power in return as well. It's hard to say what they would've done with that combo. Especially since Sheik was the faster of the two Zeldas to help contrast them(whereas Young Link and Toon Link were meant to be faster to contrast regular Link's slower gameplay).