What elements of Injustice 2 can be adapted to mortal kombat?

- Armor Progression System?
- Special Mini-Bar? Perhaps as the time of Shang Tsung's transformation, or some character like Sareena or Reptile take on a monstrous form.
- Skins Customization System.
- Movements of some character (I imagine if the control of plants or fear)? - Skins as Character. - Tricks