We're losing Imp Gang Boss from BRM and Dark Peddler from LoE, so zoo decks will have to come up with different ways to generate tokens/have weak bodies for this to eat. Without tokens a lot of the early game minions are probably too valuable to give up on turn 4. Certainly a strong card when it eats, but there's now a lot more reliance on less reliable token generators for this to work on curve.
Decent to say the least, but it's conditional on board state. Warlock needs some flat out 'good by itself' minions, in particular with Imp Gang and Paddler leaving. We already have no spells to speak of (and PO leaves too). Warlock has no identity at the moment and the cards revealed so far don't change that.