Ryu Hayabusa
Filthy Casual
Zod, Sinestro and Batman's trait were not that different to sonya's drone, subzero's ice Klone, predators net and discs, reptiles ex forceball and Takeda's ex-kunai and light-sabre.Traits define Injustice, some of them were like that but some were not. For instance Bane being able to pump up venom in the middle of a command grab or after he does super but before he grabs you, Zod smackig you with trait while you are being hit by EX lasers, Sinestro or batman being able to trait shot/bat you out of the air while holding back to block, green lantern being able to cancel into trait activation from a string and then cancel trait activation into lanterns might, flash could also cancel specials into trait activation. Traits are way more unique than just some special move and they define the uniqueness of the game and creativity behind some of the characters designs.
Now, some characters like Joker or Shazam and what not could definitely use a redisgn of their traits since it didnt compliment their design much but thats fine considering it was their first try implementing them
Wonder Woman and nightwing had unique traits but WoWo's trait was utter garbage that barely anyone used.