Injustice-y or no, I think her design is just kind of uninspired.
She's a goddess of life so she has to wear leaves and rocks and stuff for clothes? Raiden's a god of thunder, but he's not wearing clothes with lightning bolts all over, or wearing gloves/boots made solely of electricity. Correct me if I'm wrong, but isn't it believed that Shinnok is/was a god of death? Despite that, he traditionally doesn't wear a bunch of skulls and bones as his outfit (I'm aware of his silly skelly hands in X though).
I just think she looks very basic and boring. Very stereotypical goddess of life/elements, at least in her trailer costume. That's just my opinion though, and I'm happy for those that like the design.