Knife Juggler should be a good choice in decks that play many cheap minions, but with 3 Attack, it is played almost universally. We’re reducing Knife Juggler’s Attack from 3 to 2, so this card will move into a more specialized role in the decks that include it, instead of always being among the best choices for a 2 mana-cost minion.
Not a big change, I must say that it doesn't change almost anything. IMO the problem wasn't his stats, but his ability to combo with cards like Unleash the Hounds. I guess replaceing word "summon" with word "play" would be better way to nerf it, but we'll see. Anyway, I think this will still see enough play.
Still completely playable, every aggro deck that had juggle strong combos (that is, just Hunter with Standard) will keep it. Should have also been nerfed from 'summon' to 'play' in my opinion. But I guess we bid farewell to three of his best friends, Haunted Creeper, Imp-losion and Muster for Battle so at least there's that.