Zatanna needs more leniency on her teleport inputs, faster normals, bigger hitboxes and more block advantage. Obviously shes not much of a rush down character, but she's not the best zoner either. Fuck sinestro and deathstroke have godlike normals compared to zatanna, and do a better job at zoning.
Lobo needs to stack his trait, a lower jump arc, or atleast a heavier jump. More range on his command grabs and a valid wake up.
Scorpion, keep his damage how it is, but give him old j3 back and I think he will be fine.