I already got my top pick with Banjo-Kazooie, so nothing else really matters, though I understand why Minecraft is here, it's an utterly massive and popular game for years now, and since Smash Bros is basically THE crossover game celebrating gaming history, it makes sense to have it, even if Steve isn't really a character. And even then, Nintendo has done that before with fighters like Game & Watch, ROB, Villager, and probably a couple others would be a similar fit. This will be a hugely popular character for younger folks for sure and in the end, that's all that really matters.
That being said, I do think visually all the Minecraft stuff doesn't look great within Smash Bros. It's such a clashing art style, which is weird as Nintendo has done kinda pixelated retro stuff before, but the ultra blocky characters look so strange and out of place. That's my only real complaint with this. Sometimes there is just not gonna be characters folks like, but still appeal to a bunch of others.