So, finished Steve's classic mode and Spirits.
Some quick first impressions: this character struggles quite a bit against crowds. Probably wouldn't pull Steve out with more than 4 players lol.
Steve has a lot of utility in his kit... but to counter that, his stats seem pretty poor and he's useless without mining for materials. Which makes sense, really.
My prediction for the competitive side of things is that he'll be like Hero: a threat in the right hands or circumstances, but overall very inconsistent.
PS: I'll never understand why they went with Steve's lo-res textures... but then gave some of his Spirits the updated ones.
PS2: the metal/gold powerup on them is one of the dumbest things I've ever seen in Smash, lol.
PS3: a hint for the Zombie fight: just use a Health Drain and watch the fight win itself.