A class-specific Stonehill Defender, but which Warrior-specific Taunt minions do we have? Only the new legendary, right? Whatever, the reward for playing many Taunt minions was incredible pressure in the late game via Rag shots so unless they don't introduce something equal I fail to see why you would play Taunt over e.g. Bomb Warrior.
Doesn't seem better than Stonehill Defender to me. With earlygame taunts you generally want health heavier stats. 1 Attack is enough to kill most aggro earlygame minions (and lackeys nowadays). Also earlygame taunts with big health protect your other important stuff, that's why Tar Creeper was so good.