Here's an idea I had. I think they could pull it off without problem with the power of current gen consoles.

When the characters get cut in half or have limbs ripped off, it's the exact same thing for everyone. They're perfectly sliced. Problem is, not everyone is made of skin.

D'Vorah has an exoskeleton. She should look cracked instead of sliced.

Robots should look broken with wires or pieces sticking out.

Ermac shouldn't bleed. Souls should be coming out of him.