As time goes on after seeing story mode it feels so strange to have Kuai Liang copypasted onto Hanzo's life. Identity, elemental powers, color, even stealing his wife then raising Hanzo, as a boy, with said wife. By itself I actually like him being a firebender to Bi-Han's ice and an active rivalry of brothers is cool, yeah... but I would've been fine with him being called Scorpion but with red coloring, or yellow coloring but named a different codename (like how he was once Tundra despite sharing color and powers with Bi-Han's Sub-Zero). Something to truly differentiate him from Hanzo's Scorpion while recalling him.
Hell, having Hanzo's Scorpion be a Lin Kuei who got unjustly murdered by a jealous Bi-Han in rivalry and his family killed by Quan Chi to motivate him into becoming Scorpion and Quan's bitch boy would've been all you needed if Liu's merging a bunch of stuff.